51831084 has 12 divisors (see below), whose sum is σ = 120939224. Its totient is φ = 17277024.

The previous prime is 51831071. The next prime is 51831103. The reversal of 51831084 is 48013815.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×51831084² = 5372922537230112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2159617 + ... + 2159640.

Almost surely, 2^51831084 is an apocalyptic number.

It is an amenable number.

51831084 is an abundant number, since it is smaller than the sum of its proper divisors (69108140).

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

51831084 is a wasteful number, since it uses less digits than its factorization.

51831084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319264 (or 4319262 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 51831084 is about 7199.3808067083. The cubic root of 51831084 is about 372.8465228800.

Adding to 51831084 its reverse (48013815), we get a palindrome (99844899).

The spelling of 51831084 in words is "fifty-one million, eight hundred thirty-one thousand, eighty-four".