151913 has 4 divisors (see below), whose sum is σ = 154068. Its totient is φ = 149760.

The previous prime is 151909. The next prime is 151937. The reversal of 151913 is 319151.

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 71824 + 80089 = 268^2 + 283^2 .

It is a cyclic number.

It is not a de Polignac number, because 151913 - 2² = 151909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 151913.

It is not an unprimeable number, because it can be changed into a prime (151903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 968 + ... + 1113.

It is an arithmetic number, because the mean of its divisors is an integer number (38517).

2¹⁵¹⁹¹³ is an apocalyptic number.

It is an amenable number.

151913 is a deficient number, since it is larger than the sum of its proper divisors (2155).

151913 is an equidigital number, since it uses as much as digits as its factorization.

151913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154.

The product of its digits is 135, while the sum is 20.

The square root of 151913 is about 389.7601826765. The cubic root of 151913 is about 53.3578489723.

The spelling of 151913 in words is "one hundred fifty-one thousand, nine hundred thirteen".