157659951 has 4 divisors (see below), whose sum is σ = 210213272. Its totient is φ = 105106632.

The previous prime is 157659947. The next prime is 157659961. The reversal of 157659951 is 159956751.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 157659951 - 2² = 157659947 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 157659951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157659961) 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, 26276656 + ... + 26276661.

It is an arithmetic number, because the mean of its divisors is an integer number (52553318).

Almost surely, 2^157659951 is an apocalyptic number.

157659951 is a deficient number, since it is larger than the sum of its proper divisors (52553321).

157659951 is an equidigital number, since it uses as much as digits as its factorization.

157659951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52553320.

The product of its digits is 425250, while the sum is 48.

The square root of 157659951 is about 12556.2713812660. The cubic root of 157659951 is about 540.2239023485.

The spelling of 157659951 in words is "one hundred fifty-seven million, six hundred fifty-nine thousand, nine hundred fifty-one".