157902922 has 4 divisors (see below), whose sum is σ = 236854386. Its totient is φ = 78951460.

The previous prime is 157902917. The next prime is 157902929. The reversal of 157902922 is 229209751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229209751 = 1093 ⋅209707.

It can be written as a sum of positive squares in only one way, i.e., 142778601 + 15124321 = 11949^2 + 3889^2 .

It is a super-2 number, since 2×157902922² = 49866665552276168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (157902929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39475729 + ... + 39475732.

Almost surely, 2^157902922 is an apocalyptic number.

157902922 is a deficient number, since it is larger than the sum of its proper divisors (78951464).

157902922 is an equidigital number, since it uses as much as digits as its factorization.

157902922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78951463.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 157902922 is about 12565.9429411405. The cubic root of 157902922 is about 540.5012743564.

The spelling of 157902922 in words is "one hundred fifty-seven million, nine hundred two thousand, nine hundred twenty-two".