51587392 has 28 divisors (see below), whose sum is σ = 102690676. Its totient is φ = 25712640.

The previous prime is 51587377. The next prime is 51587399. The reversal of 51587392 is 29378515.

It can be written as a sum of positive squares in 2 ways, for example, as 30206016 + 21381376 = 5496^2 + 4624^2 .

It is a super-2 number, since 2×51587392² = 5322518026723328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51587399) 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, 22792 + ... + 24952.

Almost surely, 2^51587392 is an apocalyptic number.

It is an amenable number.

51587392 is a deficient number, since it is larger than the sum of its proper divisors (51103284).

51587392 is a wasteful number, since it uses less digits than its factorization.

51587392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546 (or 2536 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 51587392 is about 7182.4363554437. The cubic root of 51587392 is about 372.2612724985.

The spelling of 51587392 in words is "fifty-one million, five hundred eighty-seven thousand, three hundred ninety-two".