157228879 has 2 divisors, whose sum is σ = 157228880. Its totient is φ = 157228878.

The previous prime is 157228859. The next prime is 157228927. The reversal of 157228879 is 978822751.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 157228879 - 2⁷ = 157228751 is a prime.

It is a super-4 number, since 4×157228879⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157228829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78614439 + 78614440.

It is an arithmetic number, because the mean of its divisors is an integer number (78614440).

Almost surely, 2^157228879 is an apocalyptic number.

157228879 is a deficient number, since it is larger than the sum of its proper divisors (1).

157228879 is an equidigital number, since it uses as much as digits as its factorization.

157228879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 49.

The square root of 157228879 is about 12539.0940262844. The cubic root of 157228879 is about 539.7310949673.

It can be divided in two parts, 157 and 228879, that multiplied together give a triangular number (35934003 = T₈₄₇₇).

The spelling of 157228879 in words is "one hundred fifty-seven million, two hundred twenty-eight thousand, eight hundred seventy-nine".