51090184 has 16 divisors (see below), whose sum is σ = 97365420. Its totient is φ = 25126080.

The previous prime is 51090173. The next prime is 51090203. The reversal of 51090184 is 48109015.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49702500 + 1387684 = 7050^2 + 1178^2 .

It is a super-2 number, since 2×51090184² = 5220413802307712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51859 + ... + 52834.

Almost surely, 2^51090184 is an apocalyptic number.

It is an amenable number.

51090184 is a deficient number, since it is larger than the sum of its proper divisors (46275236).

51090184 is a wasteful number, since it uses less digits than its factorization.

51090184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104760 (or 104756 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 51090184 is about 7147.7397826166. The cubic root of 51090184 is about 371.0614371172.

Adding to 51090184 its reverse (48109015), we get a palindrome (99199199).

The spelling of 51090184 in words is "fifty-one million, ninety thousand, one hundred eighty-four".