157171212 has 48 divisors (see below), whose sum is σ = 444528000. Its totient is φ = 47627280.

The previous prime is 157171199. The next prime is 157171237. The reversal of 157171212 is 212171751.

157171212 is a `hidden beast` number, since 1 + 571 + 71 + 21 + 2 = 666.

157171212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 64962 + ... + 67337.

It is an arithmetic number, because the mean of its divisors is an integer number (9261000).

Almost surely, 2^157171212 is an apocalyptic number.

157171212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157171212 is an abundant number, since it is smaller than the sum of its proper divisors (287356788).

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

157171212 is a wasteful number, since it uses less digits than its factorization.

157171212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132323 (or 132315 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 157171212 is about 12536.7943270997. The cubic root of 157171212 is about 539.6651009861.

The spelling of 157171212 in words is "one hundred fifty-seven million, one hundred seventy-one thousand, two hundred twelve".