51503016 has 32 divisors (see below), whose sum is σ = 129333600. Its totient is φ = 17090880.

The previous prime is 51502999. The next prime is 51503083. The reversal of 51503016 is 61030515.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51502983 and 51503001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (4041675).

Almost surely, 2^51503016 is an apocalyptic number.

It is an amenable number.

51503016 is an abundant number, since it is smaller than the sum of its proper divisors (77830584).

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

51503016 is a wasteful number, since it uses less digits than its factorization.

51503016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609 (or 9605 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 51503016 is about 7176.5601788043. The cubic root of 51503016 is about 372.0582057148.

The spelling of 51503016 in words is "fifty-one million, five hundred three thousand, sixteen".