117285571 has 4 divisors (see below), whose sum is σ = 126307552. Its totient is φ = 108263592.

The previous prime is 117285551. The next prime is 117285583. The reversal of 117285571 is 175582711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 175582711 = 179 ⋅980909.

It is a cyclic number.

It is not a de Polignac number, because 117285571 - 2¹³ = 117277379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117285571.

It is not an unprimeable number, because it can be changed into a prime (117285551) 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, 4510971 + ... + 4510996.

It is an arithmetic number, because the mean of its divisors is an integer number (31576888).

Almost surely, 2^117285571 is an apocalyptic number.

117285571 is a deficient number, since it is larger than the sum of its proper divisors (9021981).

117285571 is an equidigital number, since it uses as much as digits as its factorization.

117285571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021980.

The product of its digits is 19600, while the sum is 37.

The square root of 117285571 is about 10829.8463054653. The cubic root of 117285571 is about 489.4949272999.

The spelling of 117285571 in words is "one hundred seventeen million, two hundred eighty-five thousand, five hundred seventy-one".