61522464 has 24 divisors (see below), whose sum is σ = 161496720. Its totient is φ = 20507456.

The previous prime is 61522463. The next prime is 61522469. The reversal of 61522464 is 46422516.

61522464 is nontrivially palindromic in base 11.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (61522463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320334 + ... + 320525.

It is an arithmetic number, because the mean of its divisors is an integer number (6729030).

Almost surely, 2^61522464 is an apocalyptic number.

It is an amenable number.

61522464 is an abundant number, since it is smaller than the sum of its proper divisors (99974256).

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

61522464 is a wasteful number, since it uses less digits than its factorization.

61522464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640872 (or 640864 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 61522464 is about 7843.6256922421. The cubic root of 61522464 is about 394.7703926496.

The spelling of 61522464 in words is "sixty-one million, five hundred twenty-two thousand, four hundred sixty-four".