157331617 has 8 divisors (see below), whose sum is σ = 167032800. Its totient is φ = 147680064.

The previous prime is 157331599. The next prime is 157331653. The reversal of 157331617 is 716133751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157331617 - 2¹⁵ = 157298849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (157331687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5767 + ... + 18652.

It is an arithmetic number, because the mean of its divisors is an integer number (20879100).

Almost surely, 2^157331617 is an apocalyptic number.

157331617 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

157331617 is a deficient number, since it is larger than the sum of its proper divisors (9701183).

157331617 is a wasteful number, since it uses less digits than its factorization.

157331617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24815.

The product of its digits is 13230, while the sum is 34.

The square root of 157331617 is about 12543.1900647323. The cubic root of 157331617 is about 539.8486281249.

The spelling of 157331617 in words is "one hundred fifty-seven million, three hundred thirty-one thousand, six hundred seventeen".