51136698 has 16 divisors (see below), whose sum is σ = 102353760. Its totient is φ = 17032176.

The previous prime is 51136667. The next prime is 51136711. The reversal of 51136698 is 89663115.

It is a super-2 number, since 2×51136698² = 5229923764686408, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7761 + ... + 12747.

It is an arithmetic number, because the mean of its divisors is an integer number (6397110).

Almost surely, 2^51136698 is an apocalyptic number.

51136698 is an abundant number, since it is smaller than the sum of its proper divisors (51217062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51136698 is a wasteful number, since it uses less digits than its factorization.

51136698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701.

The product of its digits is 38880, while the sum is 39.

The square root of 51136698 is about 7150.9927982064. The cubic root of 51136698 is about 371.1740113608.

It can be divided in two parts, 5113 and 6698, that added together give a palindrome (11811).

The spelling of 51136698 in words is "fifty-one million, one hundred thirty-six thousand, six hundred ninety-eight".