51995526 has 16 divisors (see below), whose sum is σ = 113444928. Its totient is φ = 15756200.

The previous prime is 51995519. The next prime is 51995527. The reversal of 51995526 is 62559915.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51995527) 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, 393840 + ... + 393971.

It is an arithmetic number, because the mean of its divisors is an integer number (7090308).

Almost surely, 2^51995526 is an apocalyptic number.

51995526 is an abundant number, since it is smaller than the sum of its proper divisors (61449402).

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

51995526 is a wasteful number, since it uses less digits than its factorization.

51995526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787827.

The product of its digits is 121500, while the sum is 42.

The square root of 51995526 is about 7210.7923281703. The cubic root of 51995526 is about 373.2404107241.

The spelling of 51995526 in words is "fifty-one million, nine hundred ninety-five thousand, five hundred twenty-six".