157051658 has 4 divisors (see below), whose sum is σ = 235577490. Its totient is φ = 78525828.

The previous prime is 157051639. The next prime is 157051679. The reversal of 157051658 is 856150751.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 856150751 = 3011 ⋅284341.

It can be written as a sum of positive squares in only one way, i.e., 96569929 + 60481729 = 9827^2 + 7777^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39262913 + ... + 39262916.

Almost surely, 2^157051658 is an apocalyptic number.

157051658 is a deficient number, since it is larger than the sum of its proper divisors (78525832).

157051658 is an equidigital number, since it uses as much as digits as its factorization.

157051658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78525831.

The product of its (nonzero) digits is 42000, while the sum is 38.

The square root of 157051658 is about 12532.0252952186. The cubic root of 157051658 is about 539.5282322245.

The spelling of 157051658 in words is "one hundred fifty-seven million, fifty-one thousand, six hundred fifty-eight".