51599516 has 12 divisors (see below), whose sum is σ = 95051880. Its totient is φ = 24441840.

The previous prime is 51599503. The next prime is 51599519. The reversal of 51599516 is 61599515.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51599519) 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, 339395 + ... + 339546.

It is an arithmetic number, because the mean of its divisors is an integer number (7920990).

Almost surely, 2^51599516 is an apocalyptic number.

It is an amenable number.

51599516 is a deficient number, since it is larger than the sum of its proper divisors (43452364).

51599516 is a wasteful number, since it uses less digits than its factorization.

51599516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678964 (or 678962 counting only the distinct ones).

The product of its digits is 60750, while the sum is 41.

The square root of 51599516 is about 7183.2803091624. The cubic root of 51599516 is about 372.2904329966.

Subtracting 51599516 from its reverse (61599515), we obtain a palindrome (9999999).

The spelling of 51599516 in words is "fifty-one million, five hundred ninety-nine thousand, five hundred sixteen".