55614564 has 18 divisors (see below), whose sum is σ = 140581350. Its totient is φ = 18538176.

The previous prime is 55614551. The next prime is 55614569. The reversal of 55614564 is 46541655.

55614564 is a `hidden beast` number, since 556 + 1 + 45 + 64 = 666.

It can be written as a sum of positive squares in only one way, i.e., 49112064 + 6502500 = 7008^2 + 2550^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1544849 = 55614564 / (5 + 5 + 6 + 1 + 4 + 5 + 6 + 4).

It is not an unprimeable number, because it can be changed into a prime (55614569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772389 + ... + 772460.

It is an arithmetic number, because the mean of its divisors is an integer number (7810075).

Almost surely, 2^55614564 is an apocalyptic number.

It is an amenable number.

55614564 is an abundant number, since it is smaller than the sum of its proper divisors (84966786).

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

55614564 is a wasteful number, since it uses less digits than its factorization.

55614564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544859 (or 1544854 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 55614564 is about 7457.5172812405. The cubic root of 55614564 is about 381.7064619955.

The spelling of 55614564 in words is "fifty-five million, six hundred fourteen thousand, five hundred sixty-four".