51116737 has 16 divisors (see below), whose sum is σ = 60915712. Its totient is φ = 41970960.

The previous prime is 51116731. The next prime is 51116761. The reversal of 51116737 is 73761115.

It is a cyclic number.

It is not a de Polignac number, because 51116737 - 2⁷ = 51116609 is a prime.

It is a super-2 number, since 2×51116737² = 5225841603054338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51116699 and 51116708.

It is not an unprimeable number, because it can be changed into a prime (51116731) 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, 21208 + ... + 23494.

It is an arithmetic number, because the mean of its divisors is an integer number (3807232).

Almost surely, 2^51116737 is an apocalyptic number.

It is an amenable number.

51116737 is a deficient number, since it is larger than the sum of its proper divisors (9798975).

51116737 is a wasteful number, since it uses less digits than its factorization.

51116737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428.

The product of its digits is 4410, while the sum is 31.

The square root of 51116737 is about 7149.5969816487. The cubic root of 51116737 is about 371.1257096586.

The spelling of 51116737 in words is "fifty-one million, one hundred sixteen thousand, seven hundred thirty-seven".