51118146 has 24 divisors (see below), whose sum is σ = 110951100. Its totient is φ = 17009376.

The previous prime is 51118139. The next prime is 51118147. The reversal of 51118146 is 64181115.

51118146 is a `hidden beast` number, since 511 + 1 + 8 + 146 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41100921 + 10017225 = 6411^2 + 3165^2 .

It is a super-2 number, since 2×51118146² = 5226129700954632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51118147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9580 + ... + 13928.

Almost surely, 2^51118146 is an apocalyptic number.

51118146 is an abundant number, since it is smaller than the sum of its proper divisors (59832954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51118146 is a wasteful number, since it uses less digits than its factorization.

51118146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5010 (or 5007 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 51118146 is about 7149.6955179924. The cubic root of 51118146 is about 371.1291195745.

The spelling of 51118146 in words is "fifty-one million, one hundred eighteen thousand, one hundred forty-six".