152645 has 4 divisors (see below), whose sum is σ = 183180. Its totient is φ = 122112.

The previous prime is 152641. The next prime is 152657. The reversal of 152645 is 546251.

Added to its reverse (546251) it gives a square (698896 = 836²).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17956 + 134689 = 134^2 + 367^2 .

It is a cyclic number.

It is not a de Polignac number, because 152645 - 2² = 152641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 152645.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 152645.

It is not an unprimeable number, because it can be changed into a prime (152641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15260 + ... + 15269.

It is an arithmetic number, because the mean of its divisors is an integer number (45795).

2¹⁵²⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

152645 is a deficient number, since it is larger than the sum of its proper divisors (30535).

152645 is an equidigital number, since it uses as much as digits as its factorization.

152645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30534.

The product of its digits is 1200, while the sum is 23.

The square root of 152645 is about 390.6980931615. The cubic root of 152645 is about 53.4434141283.

Adding to 152645 its reverse (546251), we get a palindrome (698896).

It can be divided in two parts, 152 and 645, that added together give a palindrome (797).

The spelling of 152645 in words is "one hundred fifty-two thousand, six hundred forty-five".