56215629 has 6 divisors (see below), whose sum is σ = 81200366. Its totient is φ = 37477080.

The previous prime is 56215589. The next prime is 56215673. The reversal of 56215629 is 92651265.

56215629 is a `hidden beast` number, since 5 + 6 + 21 + 5 + 629 = 666.

56215629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 47817225 + 8398404 = 6915^2 + 2898^2 .

It is not a de Polignac number, because 56215629 - 2⁷ = 56215501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56215593 and 56215602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56225629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3123082 + ... + 3123099.

Almost surely, 2^56215629 is an apocalyptic number.

It is an amenable number.

56215629 is a deficient number, since it is larger than the sum of its proper divisors (24984737).

56215629 is a wasteful number, since it uses less digits than its factorization.

56215629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6246187 (or 6246184 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 56215629 is about 7497.7082498588. The cubic root of 56215629 is about 383.0766593434.

The spelling of 56215629 in words is "fifty-six million, two hundred fifteen thousand, six hundred twenty-nine".