56554989 has 4 divisors (see below), whose sum is σ = 75406656. Its totient is φ = 37703324.

The previous prime is 56554973. The next prime is 56555021. The reversal of 56554989 is 98945565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 56554989 - 2⁴ = 56554973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56554919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9425829 + ... + 9425834.

It is an arithmetic number, because the mean of its divisors is an integer number (18851664).

Almost surely, 2^56554989 is an apocalyptic number.

It is an amenable number.

56554989 is a deficient number, since it is larger than the sum of its proper divisors (18851667).

56554989 is a wasteful number, since it uses less digits than its factorization.

56554989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18851666.

The product of its digits is 1944000, while the sum is 51.

The square root of 56554989 is about 7520.3051134911. The cubic root of 56554989 is about 383.8459600800.

The spelling of 56554989 in words is "fifty-six million, five hundred fifty-four thousand, nine hundred eighty-nine".