117532561 has 4 divisors (see below), whose sum is σ = 118141732. Its totient is φ = 116923392.

The previous prime is 117532559. The next prime is 117532573. The reversal of 117532561 is 165235711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64883025 + 52649536 = 8055^2 + 7256^2 .

It is a cyclic number.

It is not a de Polignac number, because 117532561 - 2¹ = 117532559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117532061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304296 + ... + 304681.

It is an arithmetic number, because the mean of its divisors is an integer number (29535433).

Almost surely, 2^117532561 is an apocalyptic number.

It is an amenable number.

117532561 is a deficient number, since it is larger than the sum of its proper divisors (609171).

117532561 is an equidigital number, since it uses as much as digits as its factorization.

117532561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609170.

The product of its digits is 6300, while the sum is 31.

The square root of 117532561 is about 10841.2435172355. The cubic root of 117532561 is about 489.8382931626.

The spelling of 117532561 in words is "one hundred seventeen million, five hundred thirty-two thousand, five hundred sixty-one".