51118051 has 4 divisors (see below), whose sum is σ = 51152400. Its totient is φ = 51083704.

The previous prime is 51118049. The next prime is 51118063. The reversal of 51118051 is 15081115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51118051 - 2¹ = 51118049 is a prime.

It is a super-2 number, since 2×51118051² = 5226110276077202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51118091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14836 + ... + 17953.

It is an arithmetic number, because the mean of its divisors is an integer number (12788100).

Almost surely, 2^51118051 is an apocalyptic number.

51118051 is a deficient number, since it is larger than the sum of its proper divisors (34349).

51118051 is a wasteful number, since it uses less digits than its factorization.

51118051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34348.

The product of its (nonzero) digits is 200, while the sum is 22.

The square root of 51118051 is about 7149.6888743497. The cubic root of 51118051 is about 371.1288896673.

Adding to 51118051 its reverse (15081115), we get a palindrome (66199166).

The spelling of 51118051 in words is "fifty-one million, one hundred eighteen thousand, fifty-one".