51025740 has 48 divisors (see below), whose sum is σ = 143700480. Its totient is φ = 13528000.

The previous prime is 51025717. The next prime is 51025757. The reversal of 51025740 is 4752015.

It is a super-2 number, since 2×51025740² = 5207252285095200, 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 51025740.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8365 + ... + 13115.

It is an arithmetic number, because the mean of its divisors is an integer number (2993760).

Almost surely, 2^51025740 is an apocalyptic number.

It is an amenable number.

51025740 is an abundant number, since it is smaller than the sum of its proper divisors (92674740).

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

51025740 is a wasteful number, since it uses less digits than its factorization.

51025740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942 (or 4940 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 51025740 is about 7143.2303616781. The cubic root of 51025740 is about 370.9053553108.

Adding to 51025740 its reverse (4752015), we get a palindrome (55777755).

The spelling of 51025740 in words is "fifty-one million, twenty-five thousand, seven hundred forty".