2561632552 has 8 divisors (see below), whose sum is σ = 4803061050. Its totient is φ = 1280816272.

The previous prime is 2561632519. The next prime is 2561632583. The reversal of 2561632552 is 2552361652.

It can be written as a sum of positive squares in only one way, i.e., 1840924836 + 720707716 = 42906^2 + 26846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2561632552² = 13123922662932065408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160102027 + ... + 160102042.

Almost surely, 2^2561632552 is an apocalyptic number.

It is an amenable number.

2561632552 is a deficient number, since it is larger than the sum of its proper divisors (2241428498).

2561632552 is a wasteful number, since it uses less digits than its factorization.

2561632552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320204075 (or 320204071 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

The square root of 2561632552 is about 50612.5730624318. The cubic root of 2561632552 is about 1368.2714897831.

The spelling of 2561632552 in words is "two billion, five hundred sixty-one million, six hundred thirty-two thousand, five hundred fifty-two".