51442260 has 48 divisors (see below), whose sum is σ = 150304896. Its totient is φ = 13121152.

The previous prime is 51442243. The next prime is 51442271. The reversal of 51442260 is 6224415.

It is a super-2 number, since 2×51442260² = 5292612227815200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51442260.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17259 + ... + 20018.

It is an arithmetic number, because the mean of its divisors is an integer number (3131352).

Almost surely, 2^51442260 is an apocalyptic number.

It is an amenable number.

51442260 is an abundant number, since it is smaller than the sum of its proper divisors (98862636).

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

51442260 is a wasteful number, since it uses less digits than its factorization.

51442260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37312 (or 37310 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 51442260 is about 7172.3259825527. The cubic root of 51442260 is about 371.9118475363.

Adding to 51442260 its reverse (6224415), we get a palindrome (57666675).

The spelling of 51442260 in words is "fifty-one million, four hundred forty-two thousand, two hundred sixty".