155357913 has 4 divisors (see below), whose sum is σ = 207143888. Its totient is φ = 103571940.

The previous prime is 155357903. The next prime is 155357921. The reversal of 155357913 is 319753551.

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.

It is not a de Polignac number, because 155357913 - 2¹⁰ = 155356889 is a prime.

It is a super-2 number, since 2×155357913² = 48272162263431138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155357903) 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, 25892983 + ... + 25892988.

It is an arithmetic number, because the mean of its divisors is an integer number (51785972).

Almost surely, 2^155357913 is an apocalyptic number.

It is an amenable number.

155357913 is a deficient number, since it is larger than the sum of its proper divisors (51785975).

155357913 is an equidigital number, since it uses as much as digits as its factorization.

155357913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51785974.

The product of its digits is 70875, while the sum is 39.

The square root of 155357913 is about 12464.2654416536. The cubic root of 155357913 is about 537.5816791683.

The spelling of 155357913 in words is "one hundred fifty-five million, three hundred fifty-seven thousand, nine hundred thirteen".