56561104 has 10 divisors (see below), whose sum is σ = 109587170. Its totient is φ = 28280544.

The previous prime is 56561059. The next prime is 56561129. The reversal of 56561104 is 40116565.

It can be written as a sum of positive squares in only one way, i.e., 54464400 + 2096704 = 7380^2 + 1448^2 .

It is a super-3 number, since 3×56561104³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1767519 + ... + 1767550.

It is an arithmetic number, because the mean of its divisors is an integer number (10958717).

Almost surely, 2^56561104 is an apocalyptic number.

It is an amenable number.

56561104 is a deficient number, since it is larger than the sum of its proper divisors (53026066).

56561104 is a wasteful number, since it uses less digits than its factorization.

56561104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535077 (or 3535071 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 56561104 is about 7520.7116684527. The cubic root of 56561104 is about 383.8597940110.

Adding to 56561104 its reverse (40116565), we get a palindrome (96677669).

It can be divided in two parts, 56561 and 104, that added together give a palindrome (56665).

The spelling of 56561104 in words is "fifty-six million, five hundred sixty-one thousand, one hundred four".