157310513 has 4 divisors (see below), whose sum is σ = 157739520. Its totient is φ = 156881508.

The previous prime is 157310509. The next prime is 157310533. The reversal of 157310513 is 315013751.

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 a cyclic number.

It is not a de Polignac number, because 157310513 - 2² = 157310509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157310533) 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, 213953 + ... + 214686.

It is an arithmetic number, because the mean of its divisors is an integer number (39434880).

Almost surely, 2^157310513 is an apocalyptic number.

It is an amenable number.

157310513 is a deficient number, since it is larger than the sum of its proper divisors (429007).

157310513 is an equidigital number, since it uses as much as digits as its factorization.

157310513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429006.

The product of its (nonzero) digits is 1575, while the sum is 26.

The square root of 157310513 is about 12542.3487832224. The cubic root of 157310513 is about 539.8244891436.

The spelling of 157310513 in words is "one hundred fifty-seven million, three hundred ten thousand, five hundred thirteen".