161564030 has 16 divisors (see below), whose sum is σ = 306121680. Its totient is φ = 61224192.

The previous prime is 161564021. The next prime is 161564047. The reversal of 161564030 is 30465161.

161564030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161564030² = 52205871579681800, 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, 424979 + ... + 425358.

It is an arithmetic number, because the mean of its divisors is an integer number (19132605).

Almost surely, 2^161564030 is an apocalyptic number.

161564030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161564030 is a deficient number, since it is larger than the sum of its proper divisors (144557650).

161564030 is a wasteful number, since it uses less digits than its factorization.

161564030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850363.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 161564030 is about 12710.7840041439. The cubic root of 161564030 is about 544.6467199562.

The spelling of 161564030 in words is "one hundred sixty-one million, five hundred sixty-four thousand, thirty".