152557813 has 8 divisors (see below), whose sum is σ = 161642520. Its totient is φ = 143485440.

The previous prime is 152557807. The next prime is 152557819. The reversal of 152557813 is 318755251.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (152557807) and next prime (152557819).

It can be written as a sum of positive squares in 4 ways, for example, as 17114769 + 135443044 = 4137^2 + 11638^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-152557813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152557819) 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, 38593 + ... + 42361.

It is an arithmetic number, because the mean of its divisors is an integer number (20205315).

Almost surely, 2^152557813 is an apocalyptic number.

It is an amenable number.

152557813 is a deficient number, since it is larger than the sum of its proper divisors (9084707).

152557813 is a wasteful number, since it uses less digits than its factorization.

152557813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6167.

The product of its digits is 42000, while the sum is 37.

The square root of 152557813 is about 12351.4295933710. The cubic root of 152557813 is about 534.3323701068.

The spelling of 152557813 in words is "one hundred fifty-two million, five hundred fifty-seven thousand, eight hundred thirteen".