56020551 has 4 divisors (see below), whose sum is σ = 74694072. Its totient is φ = 37347032.

The previous prime is 56020513. The next prime is 56020561. The reversal of 56020551 is 15502065.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56020551 - 2⁹ = 56020039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56020501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9336756 + ... + 9336761.

It is an arithmetic number, because the mean of its divisors is an integer number (18673518).

Almost surely, 2^56020551 is an apocalyptic number.

56020551 is a deficient number, since it is larger than the sum of its proper divisors (18673521).

56020551 is a wasteful number, since it uses less digits than its factorization.

56020551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18673520.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 56020551 is about 7484.6877690389. The cubic root of 56020551 is about 382.6330316029.

The spelling of 56020551 in words is "fifty-six million, twenty thousand, five hundred fifty-one".