157561272 has 48 divisors (see below), whose sum is σ = 465524280. Its totient is φ = 47745600.

The previous prime is 157561267. The next prime is 157561273. The reversal of 157561272 is 272165751.

157561272 is a `hidden beast` number, since 1 + 575 + 6 + 12 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157561273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98679 + ... + 100262.

Almost surely, 2^157561272 is an apocalyptic number.

157561272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157561272 is an abundant number, since it is smaller than the sum of its proper divisors (307963008).

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

157561272 is a wasteful number, since it uses less digits than its factorization.

157561272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198964 (or 198957 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The square root of 157561272 is about 12552.3412955512. The cubic root of 157561272 is about 540.1111705272. Note that the first 4 decimals are identical.

The spelling of 157561272 in words is "one hundred fifty-seven million, five hundred sixty-one thousand, two hundred seventy-two".