56209651 has 2 divisors, whose sum is σ = 56209652. Its totient is φ = 56209650.

The previous prime is 56209649. The next prime is 56209661. The reversal of 56209651 is 15690265.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56209651 - 2¹ = 56209649 is a prime.

Together with 56209649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56209661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28104825 + 28104826.

It is an arithmetic number, because the mean of its divisors is an integer number (28104826).

Almost surely, 2^56209651 is an apocalyptic number.

56209651 is a deficient number, since it is larger than the sum of its proper divisors (1).

56209651 is an equidigital number, since it uses as much as digits as its factorization.

56209651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 56209651 is about 7497.3095841108. The cubic root of 56209651 is about 383.0630800032.

The spelling of 56209651 in words is "fifty-six million, two hundred nine thousand, six hundred fifty-one".