51516052 has 36 divisors (see below), whose sum is σ = 111048084. Its totient is φ = 20778240.

The previous prime is 51516043. The next prime is 51516071. The reversal of 51516052 is 25061515.

It can be written as a sum of positive squares in 2 ways, for example, as 25260676 + 26255376 = 5026^2 + 5124^2 .

It is a super-2 number, since 2×51516052² = 5307807227333408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4399 + ... + 11062.

It is an arithmetic number, because the mean of its divisors is an integer number (3084669).

Almost surely, 2^51516052 is an apocalyptic number.

It is an amenable number.

51516052 is an abundant number, since it is smaller than the sum of its proper divisors (59532032).

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

51516052 is a wasteful number, since it uses less digits than its factorization.

51516052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15496 (or 15487 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51516052 is about 7177.4683559038. The cubic root of 51516052 is about 372.0895937900.

Adding to 51516052 its reverse (25061515), we get a palindrome (76577567).

The spelling of 51516052 in words is "fifty-one million, five hundred sixteen thousand, fifty-two".