52561616 has 20 divisors (see below), whose sum is σ = 105124224. Its totient is φ = 25432800.

The previous prime is 52561591. The next prime is 52561627. The reversal of 52561616 is 61616525.

52561616 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52490 + ... + 53481.

Almost surely, 2^52561616 is an apocalyptic number.

It is an amenable number.

52561616 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52561616 is a wasteful number, since it uses less digits than its factorization.

52561616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106010 (or 106004 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 52561616 is about 7249.9390342264. The cubic root of 52561616 is about 374.5900491894.

The spelling of 52561616 in words is "fifty-two million, five hundred sixty-one thousand, six hundred sixteen".