51552260 has 24 divisors (see below), whose sum is σ = 108656856. Its totient is φ = 20545280.

The previous prime is 51552217. The next prime is 51552317. The reversal of 51552260 is 6225515.

It can be written as a sum of positive squares in 4 ways, for example, as 515524 + 51036736 = 718^2 + 7144^2 .

It is a super-2 number, since 2×51552260² = 5315271022215200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1034 + ... + 10206.

It is an arithmetic number, because the mean of its divisors is an integer number (4527369).

Almost surely, 2^51552260 is an apocalyptic number.

It is an amenable number.

51552260 is an abundant number, since it is smaller than the sum of its proper divisors (57104596).

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

51552260 is a wasteful number, since it uses less digits than its factorization.

51552260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9463 (or 9461 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 51552260 is about 7179.9902506898. The cubic root of 51552260 is about 372.1767476272.

Adding to 51552260 its reverse (6225515), we get a palindrome (57777775).

The spelling of 51552260 in words is "fifty-one million, five hundred fifty-two thousand, two hundred sixty".