51117522 has 8 divisors (see below), whose sum is σ = 102235056. Its totient is φ = 17039172.

The previous prime is 51117511. The next prime is 51117533. The reversal of 51117522 is 22571115.

It is an interprime number because it is at equal distance from previous prime (51117511) and next prime (51117533).

It is a sphenic number, since it is the product of 3 distinct primes.

51117522 is an admirable number.

It is a super-2 number, since 2×51117522² = 5226002110840968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51117492 and 51117501.

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, 4259788 + ... + 4259799.

It is an arithmetic number, because the mean of its divisors is an integer number (12779382).

Almost surely, 2^51117522 is an apocalyptic number.

51117522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51117522 is a wasteful number, since it uses less digits than its factorization.

51117522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8519592.

The product of its digits is 700, while the sum is 24.

The square root of 51117522 is about 7149.6518796372. The cubic root of 51117522 is about 371.1276094421.

Adding to 51117522 its reverse (22571115), we get a palindrome (73688637).

The spelling of 51117522 in words is "fifty-one million, one hundred seventeen thousand, five hundred twenty-two".