51366738 has 16 divisors (see below), whose sum is σ = 103793760. Its totient is φ = 16945536.

The previous prime is 51366737. The next prime is 51366769. The reversal of 51366738 is 83766315.

It is a junction number, because it is equal to n+sod(n) for n = 51366696 and 51366705.

It is not an unprimeable number, because it can be changed into a prime (51366737) 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, 43548 + ... + 44711.

It is an arithmetic number, because the mean of its divisors is an integer number (6487110).

Almost surely, 2^51366738 is an apocalyptic number.

51366738 is an abundant number, since it is smaller than the sum of its proper divisors (52427022).

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

51366738 is a wasteful number, since it uses less digits than its factorization.

51366738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88361.

The product of its digits is 90720, while the sum is 39.

The square root of 51366738 is about 7167.0592295585. The cubic root of 51366738 is about 371.7297580584.

The spelling of 51366738 in words is "fifty-one million, three hundred sixty-six thousand, seven hundred thirty-eight".