51116637 has 64 divisors (see below), whose sum is σ = 87284736. Its totient is φ = 26127360.

The previous prime is 51116633. The next prime is 51116641. The reversal of 51116637 is 73661115.

It is an interprime number because it is at equal distance from previous prime (51116633) and next prime (51116641).

It is not a de Polignac number, because 51116637 - 2² = 51116633 is a prime.

It is a super-2 number, since 2×51116637² = 5225821156379538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51116633) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313518 + ... + 313680.

It is an arithmetic number, because the mean of its divisors is an integer number (1363824).

Almost surely, 2^51116637 is an apocalyptic number.

It is an amenable number.

51116637 is a deficient number, since it is larger than the sum of its proper divisors (36168099).

51116637 is a wasteful number, since it uses less digits than its factorization.

51116637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250.

The product of its digits is 3780, while the sum is 30.

The square root of 51116637 is about 7149.5899882441. The cubic root of 51116637 is about 371.1254676466.

The spelling of 51116637 in words is "fifty-one million, one hundred sixteen thousand, six hundred thirty-seven".