161054564 has 48 divisors (see below), whose sum is σ = 325140480. Its totient is φ = 69035040.

The previous prime is 161054561. The next prime is 161054609. The reversal of 161054564 is 465450161.

It is a self number, because there is not a number n which added to its sum of digits gives 161054564.

It is not an unprimeable number, because it can be changed into a prime (161054561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 319937 + ... + 320439.

It is an arithmetic number, because the mean of its divisors is an integer number (6773760).

Almost surely, 2^161054564 is an apocalyptic number.

It is an amenable number.

161054564 is an abundant number, since it is smaller than the sum of its proper divisors (164085916).

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

161054564 is a wasteful number, since it uses less digits than its factorization.

161054564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 161054564 is about 12690.7274811179. The cubic root of 161054564 is about 544.0736320820.

The spelling of 161054564 in words is "one hundred sixty-one million, fifty-four thousand, five hundred sixty-four".