157639530 has 16 divisors (see below), whose sum is σ = 378334944. Its totient is φ = 42037200.

The previous prime is 157639519. The next prime is 157639541. The reversal of 157639530 is 35936751.

157639530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (157639519) and next prime (157639541).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2627296 + ... + 2627355.

It is an arithmetic number, because the mean of its divisors is an integer number (23645934).

Almost surely, 2^157639530 is an apocalyptic number.

157639530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157639530 is an abundant number, since it is smaller than the sum of its proper divisors (220695414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157639530 is a wasteful number, since it uses less digits than its factorization.

157639530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254661.

The product of its (nonzero) digits is 85050, while the sum is 39.

The square root of 157639530 is about 12555.4581756302. The cubic root of 157639530 is about 540.2005770661.

The spelling of 157639530 in words is "one hundred fifty-seven million, six hundred thirty-nine thousand, five hundred thirty".