157917227 has 32 divisors (see below), whose sum is σ = 186654720. Its totient is φ = 132347520.

The previous prime is 157917197. The next prime is 157917229. The reversal of 157917227 is 722719751.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 157917227 - 2¹² = 157913131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157917229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 708038 + ... + 708260.

It is an arithmetic number, because the mean of its divisors is an integer number (5832960).

Almost surely, 2^157917227 is an apocalyptic number.

157917227 is a deficient number, since it is larger than the sum of its proper divisors (28737493).

157917227 is a wasteful number, since it uses less digits than its factorization.

157917227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363.

The product of its digits is 61740, while the sum is 41.

The square root of 157917227 is about 12566.5121254865. The cubic root of 157917227 is about 540.5175958556.

The spelling of 157917227 in words is "one hundred fifty-seven million, nine hundred seventeen thousand, two hundred twenty-seven".