72545 has 8 divisors (see below), whose sum is σ = 95040. Its totient is φ = 52720.

The previous prime is 72533. The next prime is 72547. The reversal of 72545 is 54527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72545 - 2⁶ = 72481 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72545.

It is not an unprimeable number, because it can be changed into a prime (72547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605 + ... + 714.

It is an arithmetic number, because the mean of its divisors is an integer number (11880).

2⁷²⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

72545 is a deficient number, since it is larger than the sum of its proper divisors (22495).

72545 is a wasteful number, since it uses less digits than its factorization.

72545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335.

The product of its digits is 1400, while the sum is 23.

The square root of 72545 is about 269.3417902963. The cubic root of 72545 is about 41.7063799143.

It can be divided in two parts, 7 and 2545, that added together give a palindrome (2552).

The spelling of 72545 in words is "seventy-two thousand, five hundred forty-five".