51630236 has 24 divisors (see below), whose sum is σ = 103479936. Its totient is φ = 22080240.

The previous prime is 51630211. The next prime is 51630253. The reversal of 51630236 is 63203615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13631 + ... + 17001.

It is an arithmetic number, because the mean of its divisors is an integer number (4311664).

Almost surely, 2^51630236 is an apocalyptic number.

It is an amenable number.

51630236 is an abundant number, since it is smaller than the sum of its proper divisors (51849700).

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

51630236 is a wasteful number, since it uses less digits than its factorization.

51630236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929 (or 3927 counting only the distinct ones).

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

The square root of 51630236 is about 7185.4182898423. The cubic root of 51630236 is about 372.3642999247.

The spelling of 51630236 in words is "fifty-one million, six hundred thirty thousand, two hundred thirty-six".