51061872 has 40 divisors (see below), whose sum is σ = 132491520. Its totient is φ = 16945600.

The previous prime is 51061859. The next prime is 51061883. The reversal of 51061872 is 27816015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9247 + ... + 13697.

It is an arithmetic number, because the mean of its divisors is an integer number (3312288).

Almost surely, 2^51061872 is an apocalyptic number.

It is an amenable number.

51061872 is an abundant number, since it is smaller than the sum of its proper divisors (81429648).

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

51061872 is a wasteful number, since it uses less digits than its factorization.

51061872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4701 (or 4695 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 51061872 is about 7145.7590219654. The cubic root of 51061872 is about 370.9928823137.

Adding to 51061872 its reverse (27816015), we get a palindrome (78877887).

The spelling of 51061872 in words is "fifty-one million, sixty-one thousand, eight hundred seventy-two".