117520651 has 4 divisors (see below), whose sum is σ = 117544792. Its totient is φ = 117496512.

The previous prime is 117520619. The next prime is 117520657. The reversal of 117520651 is 156025711.

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 117520651 - 2⁵ = 117520619 is a prime.

It is a super-2 number, since 2×117520651² = 27622206822927602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117520657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1926 + ... + 15451.

It is an arithmetic number, because the mean of its divisors is an integer number (29386198).

Almost surely, 2^117520651 is an apocalyptic number.

117520651 is a deficient number, since it is larger than the sum of its proper divisors (24141).

117520651 is an equidigital number, since it uses as much as digits as its factorization.

117520651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24140.

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 117520651 is about 10840.6942120881. The cubic root of 117520651 is about 489.8217469077.

The spelling of 117520651 in words is "one hundred seventeen million, five hundred twenty thousand, six hundred fifty-one".