51275394 has 12 divisors (see below), whose sum is σ = 111096726. Its totient is φ = 17091792.

The previous prime is 51275387. The next prime is 51275423. The reversal of 51275394 is 49357215.

51275394 is a `hidden beast` number, since 512 + 7 + 53 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 50594769 + 680625 = 7113^2 + 825^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1424299 + ... + 1424334.

Almost surely, 2^51275394 is an apocalyptic number.

51275394 is an abundant number, since it is smaller than the sum of its proper divisors (59821332).

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

51275394 is a wasteful number, since it uses less digits than its factorization.

51275394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848641 (or 2848638 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 51275394 is about 7160.6839058850. The cubic root of 51275394 is about 371.5092818548.

The spelling of 51275394 in words is "fifty-one million, two hundred seventy-five thousand, three hundred ninety-four".