56809251 has 6 divisors (see below), whose sum is σ = 82057820. Its totient is φ = 37872828.

The previous prime is 56809217. The next prime is 56809261. The reversal of 56809251 is 15290865.

It is a happy number.

56809251 is a `hidden beast` number, since 568 + 0 + 92 + 5 + 1 = 666.

It is not a de Polignac number, because 56809251 - 2¹⁴ = 56792867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56809261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3156061 + ... + 3156078.

Almost surely, 2^56809251 is an apocalyptic number.

56809251 is a deficient number, since it is larger than the sum of its proper divisors (25248569).

56809251 is a wasteful number, since it uses less digits than its factorization.

56809251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6312145 (or 6312142 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 56809251 is about 7537.1911877038. The cubic root of 56809251 is about 384.4203364331.

The spelling of 56809251 in words is "fifty-six million, eight hundred nine thousand, two hundred fifty-one".