51976380 has 48 divisors (see below), whose sum is σ = 145926144. Its totient is φ = 13823040.

The previous prime is 51976369. The next prime is 51976399. The reversal of 51976380 is 8367915.

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, 26845 + ... + 28715.

It is an arithmetic number, because the mean of its divisors is an integer number (3040128).

Almost surely, 2^51976380 is an apocalyptic number.

It is an amenable number.

51976380 is an abundant number, since it is smaller than the sum of its proper divisors (93949764).

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

51976380 is a wasteful number, since it uses less digits than its factorization.

51976380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346 (or 2344 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 51976380 is about 7209.4646125770. The cubic root of 51976380 is about 373.1945930756.

The spelling of 51976380 in words is "fifty-one million, nine hundred seventy-six thousand, three hundred eighty".