165562845 has 32 divisors (see below), whose sum is σ = 307718400. Its totient is φ = 74442240.

The previous prime is 165562819. The next prime is 165562853. The reversal of 165562845 is 548265561.

It is not a de Polignac number, because 165562845 - 2⁸ = 165562589 is a prime.

It is a super-2 number, since 2×165562845² = 54822111288988050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165562797 and 165562806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6520 + ... + 19329.

It is an arithmetic number, because the mean of its divisors is an integer number (9616200).

Almost surely, 2^165562845 is an apocalyptic number.

165562845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

165562845 is a deficient number, since it is larger than the sum of its proper divisors (142155555).

165562845 is a wasteful number, since it uses less digits than its factorization.

165562845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25925.

The product of its digits is 288000, while the sum is 42.

The square root of 165562845 is about 12867.1226387254. The cubic root of 165562845 is about 549.1036031960.

The spelling of 165562845 in words is "one hundred sixty-five million, five hundred sixty-two thousand, eight hundred forty-five".