51117704 has 32 divisors (see below), whose sum is σ = 105092640. Its totient is φ = 23116800.

The previous prime is 51117701. The next prime is 51117713. The reversal of 51117704 is 40771115.

It is a super-2 number, since 2×51117704² = 5226039324463232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51117701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17192 + ... + 19944.

It is an arithmetic number, because the mean of its divisors is an integer number (3284145).

Almost surely, 2^51117704 is an apocalyptic number.

It is an amenable number.

51117704 is an abundant number, since it is smaller than the sum of its proper divisors (53974936).

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

51117704 is a wasteful number, since it uses less digits than its factorization.

51117704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2981 (or 2977 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 51117704 is about 7149.6646075183. The cubic root of 51117704 is about 371.1280498986.

Adding to 51117704 its reverse (40771115), we get a palindrome (91888819).

The spelling of 51117704 in words is "fifty-one million, one hundred seventeen thousand, seven hundred four".