51588399 has 4 divisors (see below), whose sum is σ = 68784536. Its totient is φ = 34392264.

The previous prime is 51588391. The next prime is 51588403. The reversal of 51588399 is 99388515.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51588399 - 2³ = 51588391 is a prime.

It is a super-2 number, since 2×51588399² = 5322725822766402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51588391) 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, 8598064 + ... + 8598069.

It is an arithmetic number, because the mean of its divisors is an integer number (17196134).

Almost surely, 2^51588399 is an apocalyptic number.

51588399 is a deficient number, since it is larger than the sum of its proper divisors (17196137).

51588399 is a wasteful number, since it uses less digits than its factorization.

51588399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17196136.

The product of its digits is 388800, while the sum is 48.

The square root of 51588399 is about 7182.5064566626. The cubic root of 51588399 is about 372.2636946967.

The spelling of 51588399 in words is "fifty-one million, five hundred eighty-eight thousand, three hundred ninety-nine".