51530412 has 24 divisors (see below), whose sum is σ = 120367296. Its totient is φ = 17158288.

The previous prime is 51530393. The next prime is 51530429. The reversal of 51530412 is 21403515.

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 7 ways as a sum of consecutive naturals, for example, 13723 + ... + 17069.

It is an arithmetic number, because the mean of its divisors is an integer number (5015304).

Almost surely, 2^51530412 is an apocalyptic number.

It is an amenable number.

51530412 is an abundant number, since it is smaller than the sum of its proper divisors (68836884).

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

51530412 is a wasteful number, since it uses less digits than its factorization.

51530412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4637 (or 4635 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51530412 is about 7178.4686389229. The cubic root of 51530412 is about 372.1241636633.

Adding to 51530412 its reverse (21403515), we get a palindrome (72933927).

The spelling of 51530412 in words is "fifty-one million, five hundred thirty thousand, four hundred twelve".