51250118 has 16 divisors (see below), whose sum is σ = 80372736. Its totient is φ = 24463560.

The previous prime is 51250117. The next prime is 51250139. The reversal of 51250118 is 81105215.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 51250093 and 51250102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51250117) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 39053 + ... + 40343.

It is an arithmetic number, because the mean of its divisors is an integer number (5023296).

Almost surely, 2^51250118 is an apocalyptic number.

51250118 is a deficient number, since it is larger than the sum of its proper divisors (29122618).

51250118 is a wasteful number, since it uses less digits than its factorization.

51250118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179.

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 51250118 is about 7158.9187731109. The cubic root of 51250118 is about 371.4482271509.

The spelling of 51250118 in words is "fifty-one million, two hundred fifty thousand, one hundred eighteen".