51262560 has 144 divisors (see below), whose sum is σ = 177218496. Its totient is φ = 13492224.

The previous prime is 51262559. The next prime is 51262573. The reversal of 51262560 is 6526215.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

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, 139497 + ... + 139863.

It is an arithmetic number, because the mean of its divisors is an integer number (1230684).

Almost surely, 2^51262560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51262560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88609248).

51262560 is an abundant number, since it is smaller than the sum of its proper divisors (125955936).

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

51262560 is a wasteful number, since it uses less digits than its factorization.

51262560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 51262560 is about 7159.7877063500. The cubic root of 51262560 is about 371.4782835688.

Adding to 51262560 its reverse (6526215), we get a palindrome (57788775).

The spelling of 51262560 in words is "fifty-one million, two hundred sixty-two thousand, five hundred sixty".