157129279 has 4 divisors (see below), whose sum is σ = 162547560. Its totient is φ = 151711000.

The previous prime is 157129237. The next prime is 157129309. The reversal of 157129279 is 972921751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972921751 = 113 ⋅8609927.

It is a cyclic number.

It is not a de Polignac number, because 157129279 - 2⁷ = 157129151 is a prime.

It is a super-2 number, since 2×157129279² = 49379220638119682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157123279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2709097 + ... + 2709154.

It is an arithmetic number, because the mean of its divisors is an integer number (40636890).

Almost surely, 2^157129279 is an apocalyptic number.

157129279 is a deficient number, since it is larger than the sum of its proper divisors (5418281).

157129279 is an equidigital number, since it uses as much as digits as its factorization.

157129279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5418280.

The product of its digits is 79380, while the sum is 43.

The square root of 157129279 is about 12535.1218183151. The cubic root of 157129279 is about 539.6171028207.

The spelling of 157129279 in words is "one hundred fifty-seven million, one hundred twenty-nine thousand, two hundred seventy-nine".