51566047 has 16 divisors (see below), whose sum is σ = 56647360. Its totient is φ = 46656000.

The previous prime is 51566041. The next prime is 51566063. The reversal of 51566047 is 74066515.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51566047 - 2⁷ = 51565919 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 (51566041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213847 + ... + 214087.

It is an arithmetic number, because the mean of its divisors is an integer number (3540460).

Almost surely, 2^51566047 is an apocalyptic number.

51566047 is a deficient number, since it is larger than the sum of its proper divisors (5081313).

51566047 is a wasteful number, since it uses less digits than its factorization.

51566047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 51566047 is about 7180.9502853035. The cubic root of 51566047 is about 372.2099226582.

The spelling of 51566047 in words is "fifty-one million, five hundred sixty-six thousand, forty-seven".