51118504 has 16 divisors (see below), whose sum is σ = 98939520. Its totient is φ = 24734640.

The previous prime is 51118499. The next prime is 51118567. The reversal of 51118504 is 40581115.

It is a happy number.

It is a super-2 number, since 2×51118504² = 5226202902396032, 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, 102814 + ... + 103309.

It is an arithmetic number, because the mean of its divisors is an integer number (6183720).

Almost surely, 2^51118504 is an apocalyptic number.

It is an amenable number.

51118504 is a deficient number, since it is larger than the sum of its proper divisors (47821016).

51118504 is a wasteful number, since it uses less digits than its factorization.

51118504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206160 (or 206156 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 51118504 is about 7149.7205539797. The cubic root of 51118504 is about 371.1299859590.

Adding to 51118504 its reverse (40581115), we get a palindrome (91699619).

The spelling of 51118504 in words is "fifty-one million, one hundred eighteen thousand, five hundred four".