56049561 has 24 divisors (see below), whose sum is σ = 88048584. Its totient is φ = 34214400.

The previous prime is 56049559. The next prime is 56049569. The reversal of 56049561 is 16594065.

56049561 is a `hidden beast` number, since 56 + 0 + 49 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 42653961 + 13395600 = 6531^2 + 3660^2 .

It is not a de Polignac number, because 56049561 - 2¹ = 56049559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56049569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 711 + ... + 10611.

It is an arithmetic number, because the mean of its divisors is an integer number (3668691).

Almost surely, 2^56049561 is an apocalyptic number.

56049561 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

56049561 is a deficient number, since it is larger than the sum of its proper divisors (31999023).

56049561 is a wasteful number, since it uses less digits than its factorization.

56049561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9961 (or 9958 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 56049561 is about 7486.6254748051. The cubic root of 56049561 is about 382.6990684920.

The spelling of 56049561 in words is "fifty-six million, forty-nine thousand, five hundred sixty-one".