117551623 has 4 divisors (see below), whose sum is σ = 134344720. Its totient is φ = 100758528.

The previous prime is 117551563. The next prime is 117551641. The reversal of 117551623 is 326155711.

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 117551623 - 2¹³ = 117543431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117551683) 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, 8396538 + ... + 8396551.

It is an arithmetic number, because the mean of its divisors is an integer number (33586180).

Almost surely, 2^117551623 is an apocalyptic number.

117551623 is a deficient number, since it is larger than the sum of its proper divisors (16793097).

117551623 is an equidigital number, since it uses as much as digits as its factorization.

117551623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16793096.

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

The square root of 117551623 is about 10842.1226242835. The cubic root of 117551623 is about 489.8647731801.

The spelling of 117551623 in words is "one hundred seventeen million, five hundred fifty-one thousand, six hundred twenty-three".