51089638 has 8 divisors (see below), whose sum is σ = 77393520. Its totient is φ = 25291800.

The previous prime is 51089617. The next prime is 51089653. The reversal of 51089638 is 83698015.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51089638² = 5220302221942088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51089638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126258 + ... + 126661.

It is an arithmetic number, because the mean of its divisors is an integer number (9674190).

Almost surely, 2^51089638 is an apocalyptic number.

51089638 is a deficient number, since it is larger than the sum of its proper divisors (26303882).

51089638 is a wasteful number, since it uses less digits than its factorization.

51089638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253022.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 51089638 is about 7147.7015886227. The cubic root of 51089638 is about 371.0601152699.

The spelling of 51089638 in words is "fifty-one million, eighty-nine thousand, six hundred thirty-eight".