117521644 has 6 divisors (see below), whose sum is σ = 205662884. Its totient is φ = 58760820.

The previous prime is 117521641. The next prime is 117521647. The reversal of 117521644 is 446125711.

It is an interprime number because it is at equal distance from previous prime (117521641) and next prime (117521647).

It is a super-2 number, since 2×117521644² = 27622673616925472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117521641) 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 as a sum of consecutive naturals, namely, 14690202 + ... + 14690209.

Almost surely, 2^117521644 is an apocalyptic number.

It is an amenable number.

117521644 is a deficient number, since it is larger than the sum of its proper divisors (88141240).

117521644 is a wasteful number, since it uses less digits than its factorization.

117521644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29380415 (or 29380413 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 117521644 is about 10840.7400116413. The cubic root of 117521644 is about 489.8231264997.

The spelling of 117521644 in words is "one hundred seventeen million, five hundred twenty-one thousand, six hundred forty-four".