157257879 has 8 divisors (see below), whose sum is σ = 210003840. Its totient is φ = 104675256.

The previous prime is 157257869. The next prime is 157257883. The reversal of 157257879 is 978752751.

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

It is not a de Polignac number, because 157257879 - 2⁵ = 157257847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157257809) 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, 38569 + ... + 42450.

It is an arithmetic number, because the mean of its divisors is an integer number (26250480).

Almost surely, 2^157257879 is an apocalyptic number.

157257879 is a deficient number, since it is larger than the sum of its proper divisors (52745961).

157257879 is an equidigital number, since it uses as much as digits as its factorization.

157257879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81669.

The product of its digits is 1234800, while the sum is 51.

The square root of 157257879 is about 12540.2503563525. The cubic root of 157257879 is about 539.7642764024.

The spelling of 157257879 in words is "one hundred fifty-seven million, two hundred fifty-seven thousand, eight hundred seventy-nine".