117351557 has 4 divisors (see below), whose sum is σ = 117375840. Its totient is φ = 117327276.

The previous prime is 117351551. The next prime is 117351571. The reversal of 117351557 is 755153711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755153711 = 13 ⋅58088747.

It is a cyclic number.

It is not a de Polignac number, because 117351557 - 2⁴ = 117351541 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 (117351551) 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, 2153 + ... + 15470.

It is an arithmetic number, because the mean of its divisors is an integer number (29343960).

Almost surely, 2^117351557 is an apocalyptic number.

It is an amenable number.

117351557 is a deficient number, since it is larger than the sum of its proper divisors (24283).

117351557 is an equidigital number, since it uses as much as digits as its factorization.

117351557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24282.

The product of its digits is 18375, while the sum is 35.

The square root of 117351557 is about 10832.8923653842. The cubic root of 117351557 is about 489.5867082880.

The spelling of 117351557 in words is "one hundred seventeen million, three hundred fifty-one thousand, five hundred fifty-seven".