51117064 has 16 divisors (see below), whose sum is σ = 96245820. Its totient is φ = 25451520.

The previous prime is 51117041. The next prime is 51117083. The reversal of 51117064 is 46071115.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 51008164 + 108900 = 7142^2 + 330^2 .

It is a super-2 number, since 2×51117064² = 5225908463960192, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11329 + ... + 15184.

Almost surely, 2^51117064 is an apocalyptic number.

It is an amenable number.

51117064 is a deficient number, since it is larger than the sum of its proper divisors (45128756).

51117064 is a wasteful number, since it uses less digits than its factorization.

51117064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26760 (or 26756 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 51117064 is about 7149.6198500340. The cubic root of 51117064 is about 371.1265010357.

Adding to 51117064 its reverse (46071115), we get a palindrome (97188179).

The spelling of 51117064 in words is "fifty-one million, one hundred seventeen thousand, sixty-four".