51236630 has 32 divisors (see below), whose sum is σ = 93895200. Its totient is φ = 20128000.

The previous prime is 51236609. The next prime is 51236641. The reversal of 51236630 is 3663215.

It is a self number, because there is not a number n which added to its sum of digits gives 51236630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204005 + ... + 204255.

It is an arithmetic number, because the mean of its divisors is an integer number (2934225).

Almost surely, 2^51236630 is an apocalyptic number.

51236630 is a deficient number, since it is larger than the sum of its proper divisors (42658570).

51236630 is a wasteful number, since it uses less digits than its factorization.

51236630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 51236630 is about 7157.9766694227. The cubic root of 51236630 is about 371.4156383916.

Adding to 51236630 its reverse (3663215), we get a palindrome (54899845).

The spelling of 51236630 in words is "fifty-one million, two hundred thirty-six thousand, six hundred thirty".