56511061 has 4 divisors (see below), whose sum is σ = 57713472. Its totient is φ = 55308652.

The previous prime is 56511029. The next prime is 56511089. The reversal of 56511061 is 16011565.

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 56511061 - 2⁵ = 56511029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56511001) 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, 601135 + ... + 601228.

It is an arithmetic number, because the mean of its divisors is an integer number (14428368).

Almost surely, 2^56511061 is an apocalyptic number.

It is an amenable number.

56511061 is a deficient number, since it is larger than the sum of its proper divisors (1202411).

56511061 is a wasteful number, since it uses less digits than its factorization.

56511061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202410.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 56511061 is about 7517.3839199551. The cubic root of 56511061 is about 383.7465526822.

The spelling of 56511061 in words is "fifty-six million, five hundred eleven thousand, sixty-one".