56511606 has 16 divisors (see below), whose sum is σ = 113137344. Its totient is φ = 18818184.

The previous prime is 56511577. The next prime is 56511607. The reversal of 56511606 is 60611565.

It is a super-2 number, since 2×56511606² = 6387123225398472, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56511607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545 + ... + 10931.

It is an arithmetic number, because the mean of its divisors is an integer number (7071084).

Almost surely, 2^56511606 is an apocalyptic number.

56511606 is an abundant number, since it is smaller than the sum of its proper divisors (56625738).

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

56511606 is a wasteful number, since it uses less digits than its factorization.

56511606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 56511606 is about 7517.4201691804. The cubic root of 56511606 is about 383.7477863121.

The spelling of 56511606 in words is "fifty-six million, five hundred eleven thousand, six hundred six".