51118850 has 12 divisors (see below), whose sum is σ = 95081154. Its totient is φ = 20447520.

The previous prime is 51118849. The next prime is 51118853. The reversal of 51118850 is 5881115.

It can be written as a sum of positive squares in 3 ways, for example, as 49857721 + 1261129 = 7061^2 + 1123^2 .

It is a super-2 number, since 2×51118850² = 5226273650645000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (51118853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 511139 + ... + 511238.

Almost surely, 2^51118850 is an apocalyptic number.

51118850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51118850 is a deficient number, since it is larger than the sum of its proper divisors (43962304).

51118850 is a wasteful number, since it uses less digits than its factorization.

51118850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022389 (or 1022384 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 29.

The square root of 51118850 is about 7149.7447506887. The cubic root of 51118850 is about 371.1308232989.

Adding to 51118850 its reverse (5881115), we get a palindrome (56999965).

The spelling of 51118850 in words is "fifty-one million, one hundred eighteen thousand, eight hundred fifty".