51116438 has 16 divisors (see below), whose sum is σ = 77960880. Its totient is φ = 25132800.

The previous prime is 51116431. The next prime is 51116453. The reversal of 51116438 is 83461115.

It is a super-2 number, since 2×51116438² = 5225780467615688, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51116438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51116431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36878 + ... + 38238.

It is an arithmetic number, because the mean of its divisors is an integer number (4872555).

Almost surely, 2^51116438 is an apocalyptic number.

51116438 is a deficient number, since it is larger than the sum of its proper divisors (26844442).

51116438 is a wasteful number, since it uses less digits than its factorization.

51116438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1663.

The product of its digits is 2880, while the sum is 29.

The square root of 51116438 is about 7149.5760713486. The cubic root of 51116438 is about 371.1249860417.

The spelling of 51116438 in words is "fifty-one million, one hundred sixteen thousand, four hundred thirty-eight".