157681572 has 48 divisors (see below), whose sum is σ = 384072192. Its totient is φ = 50302720.

The previous prime is 157681547. The next prime is 157681591. The reversal of 157681572 is 275186751.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23053 + ... + 29099.

It is an arithmetic number, because the mean of its divisors is an integer number (8001504).

Almost surely, 2^157681572 is an apocalyptic number.

157681572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157681572 is an abundant number, since it is smaller than the sum of its proper divisors (226390620).

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

157681572 is a wasteful number, since it uses less digits than its factorization.

157681572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148 (or 6146 counting only the distinct ones).

The product of its digits is 117600, while the sum is 42.

The square root of 157681572 is about 12557.1323159390. The cubic root of 157681572 is about 540.2485961004.

The spelling of 157681572 in words is "one hundred fifty-seven million, six hundred eighty-one thousand, five hundred seventy-two".