51589400 has 24 divisors (see below), whose sum is σ = 119945820. Its totient is φ = 20635680.

The previous prime is 51589399. The next prime is 51589403. The reversal of 51589400 is 498515.

It is a super-2 number, since 2×51589400² = 5322932384720000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51589403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128774 + ... + 129173.

Almost surely, 2^51589400 is an apocalyptic number.

51589400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51589400 is an abundant number, since it is smaller than the sum of its proper divisors (68356420).

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

51589400 is a wasteful number, since it uses less digits than its factorization.

51589400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257963 (or 257954 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 51589400 is about 7182.5761395199. The cubic root of 51589400 is about 372.2661024315.

The spelling of 51589400 in words is "fifty-one million, five hundred eighty-nine thousand, four hundred".