51844380 has 48 divisors (see below), whose sum is σ = 165903360. Its totient is φ = 11850048.

The previous prime is 51844379. The next prime is 51844391. The reversal of 51844380 is 8344815.

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, 61300 + ... + 62139.

It is an arithmetic number, because the mean of its divisors is an integer number (3456320).

Almost surely, 2^51844380 is an apocalyptic number.

It is an amenable number.

51844380 is an abundant number, since it is smaller than the sum of its proper divisors (114058980).

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

51844380 is a wasteful number, since it uses less digits than its factorization.

51844380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123458 (or 123456 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 51844380 is about 7200.3041602421. The cubic root of 51844380 is about 372.8784017138.

The spelling of 51844380 in words is "fifty-one million, eight hundred forty-four thousand, three hundred eighty".