165559416 has 32 divisors (see below), whose sum is σ = 451526400. Its totient is φ = 50169440.

The previous prime is 165559409. The next prime is 165559421. The reversal of 165559416 is 614955561.

It is a super-2 number, since 2×165559416² = 54819840452522112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313296 + ... + 313823.

It is an arithmetic number, because the mean of its divisors is an integer number (14110200).

Almost surely, 2^165559416 is an apocalyptic number.

It is an amenable number.

165559416 is an abundant number, since it is smaller than the sum of its proper divisors (285966984).

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

165559416 is a wasteful number, since it uses less digits than its factorization.

165559416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627139 (or 627135 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

The square root of 165559416 is about 12866.9893914622. The cubic root of 165559416 is about 549.0998123107.

The spelling of 165559416 in words is "one hundred sixty-five million, five hundred fifty-nine thousand, four hundred sixteen".