51797807 has 16 divisors (see below), whose sum is σ = 55468032. Its totient is φ = 48288960.

The previous prime is 51797803. The next prime is 51797813. The reversal of 51797807 is 70879715.

It is a cyclic number.

It is not a de Polignac number, because 51797807 - 2² = 51797803 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51797803) 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, 106118 + ... + 106604.

It is an arithmetic number, because the mean of its divisors is an integer number (3466752).

Almost surely, 2^51797807 is an apocalyptic number.

51797807 is a deficient number, since it is larger than the sum of its proper divisors (3670225).

51797807 is a wasteful number, since it uses less digits than its factorization.

51797807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 51797807 is about 7197.0693341109. The cubic root of 51797807 is about 372.7667131790.

The spelling of 51797807 in words is "fifty-one million, seven hundred ninety-seven thousand, eight hundred seven".