151513 has 4 divisors (see below), whose sum is σ = 153088. Its totient is φ = 149940.

The previous prime is 151507. The next prime is 151517. The reversal of 151513 is 315151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315151 = 83 ⋅3797.

It is a cyclic number.

It is not a de Polignac number, because 151513 - 2¹⁷ = 20441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633 + ... + 838.

It is an arithmetic number, because the mean of its divisors is an integer number (38272).

2¹⁵¹⁵¹³ is an apocalyptic number.

It is an amenable number.

151513 is a deficient number, since it is larger than the sum of its proper divisors (1575).

151513 is a wasteful number, since it uses less digits than its factorization.

151513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574.

The product of its digits is 75, while the sum is 16.

The square root of 151513 is about 389.2467083997. The cubic root of 151513 is about 53.3109758721.

Adding to 151513 its reverse (315151), we get a palindrome (466664).

The spelling of 151513 in words is "one hundred fifty-one thousand, five hundred thirteen".