2451117972 has 24 divisors (see below), whose sum is σ = 5723317600. Its totient is φ = 816461856.

The previous prime is 2451117967. The next prime is 2451117979. The reversal of 2451117972 is 2797111542.

It is a super-2 number, since 2×2451117972² = 12015958625322785568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2451117972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451117979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54322 + ... + 88617.

Almost surely, 2^2451117972 is an apocalyptic number.

It is an amenable number.

2451117972 is an abundant number, since it is smaller than the sum of its proper divisors (3272199628).

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

2451117972 is a wasteful number, since it uses less digits than its factorization.

2451117972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144375 (or 144373 counting only the distinct ones).

The product of its digits is 35280, while the sum is 39.

The square root of 2451117972 is about 49508.7666176406. The cubic root of 2451117972 is about 1348.3047714646.

The spelling of 2451117972 in words is "two billion, four hundred fifty-one million, one hundred seventeen thousand, nine hundred seventy-two".