51631476 has 72 divisors (see below), whose sum is σ = 133570080. Its totient is φ = 15430464.

The previous prime is 51631457. The next prime is 51631483. The reversal of 51631476 is 67413615.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (15120) is a multiple of the sum of its prime divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288355 + ... + 288533.

It is an arithmetic number, because the mean of its divisors is an integer number (1855140).

Almost surely, 2^51631476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51631476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66785040).

51631476 is an abundant number, since it is smaller than the sum of its proper divisors (81938604).

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

51631476 is a wasteful number, since it uses less digits than its factorization.

51631476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 240 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 51631476 is about 7185.5045751847. The cubic root of 51631476 is about 372.3672809172.

The spelling of 51631476 in words is "fifty-one million, six hundred thirty-one thousand, four hundred seventy-six".