51814388 has 12 divisors (see below), whose sum is σ = 90867840. Its totient is φ = 25852152.

The previous prime is 51814381. The next prime is 51814391. The reversal of 51814388 is 88341815.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51814381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11606 + ... + 15437.

It is an arithmetic number, because the mean of its divisors is an integer number (7572320).

Almost surely, 2^51814388 is an apocalyptic number.

It is an amenable number.

51814388 is a deficient number, since it is larger than the sum of its proper divisors (39053452).

51814388 is a wasteful number, since it uses less digits than its factorization.

51814388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27526 (or 27524 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 51814388 is about 7198.2211691501. The cubic root of 51814388 is about 372.8064843960.

The spelling of 51814388 in words is "fifty-one million, eight hundred fourteen thousand, three hundred eighty-eight".