51090712 has 16 divisors (see below), whose sum is σ = 101430360. Its totient is φ = 24042624.

The previous prime is 51090709. The next prime is 51090727. The reversal of 51090712 is 21709015.

It is a super-2 number, since 2×51090712² = 5220521705333888, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 187698 + ... + 187969.

Almost surely, 2^51090712 is an apocalyptic number.

It is an amenable number.

51090712 is a deficient number, since it is larger than the sum of its proper divisors (50339648).

51090712 is a wasteful number, since it uses less digits than its factorization.

51090712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375690 (or 375686 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 51090712 is about 7147.7767172737. The cubic root of 51090712 is about 371.0627153781.

Adding to 51090712 its reverse (21709015), we get a palindrome (72799727).

The spelling of 51090712 in words is "fifty-one million, ninety thousand, seven hundred twelve".