51383394 has 24 divisors (see below), whose sum is σ = 113433372. Its totient is φ = 16804320.

The previous prime is 51383383. The next prime is 51383419. The reversal of 51383394 is 49338315.

It can be written as a sum of positive squares in 2 ways, for example, as 44555625 + 6827769 = 6675^2 + 2613^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25977 + ... + 27884.

Almost surely, 2^51383394 is an apocalyptic number.

51383394 is an abundant number, since it is smaller than the sum of its proper divisors (62049978).

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

51383394 is a wasteful number, since it uses less digits than its factorization.

51383394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53922 (or 53919 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 51383394 is about 7168.2211182413. The cubic root of 51383394 is about 371.7699323164.

The spelling of 51383394 in words is "fifty-one million, three hundred eighty-three thousand, three hundred ninety-four".