51605050 has 48 divisors (see below), whose sum is σ = 110296512. Its totient is φ = 17596800.

The previous prime is 51605039. The next prime is 51605063. The reversal of 51605050 is 5050615.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98790 + ... + 99310.

It is an arithmetic number, because the mean of its divisors is an integer number (2297844).

Almost surely, 2^51605050 is an apocalyptic number.

51605050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51605050 is an abundant number, since it is smaller than the sum of its proper divisors (58691462).

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

51605050 is a wasteful number, since it uses less digits than its factorization.

51605050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 51605050 is about 7183.6654988940. The cubic root of 51605050 is about 372.3037417882.

Adding to 51605050 its reverse (5050615), we get a palindrome (56655665).

The spelling of 51605050 in words is "fifty-one million, six hundred five thousand, fifty".