117557001 has 10 divisors (see below), whose sum is σ = 175609962. Its totient is φ = 78371280.

The previous prime is 117556987. The next prime is 117557017. The reversal of 117557001 is 100755711.

It can be written as a sum of positive squares in only one way, i.e., 91699776 + 25857225 = 9576^2 + 5085^2 .

It is not a de Polignac number, because 117557001 - 2¹⁷ = 117425929 is a prime.

It is a super-2 number, since 2×117557001² = 27639296968228002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (117557051) 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 9 ways as a sum of consecutive naturals, for example, 725580 + ... + 725741.

Almost surely, 2^117557001 is an apocalyptic number.

It is an amenable number.

117557001 is a deficient number, since it is larger than the sum of its proper divisors (58052961).

117557001 is an equidigital number, since it uses as much as digits as its factorization.

117557001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1451333 (or 1451324 counting only the distinct ones).

The product of its (nonzero) digits is 1225, while the sum is 27.

The square root of 117557001 is about 10842.3706356129. The cubic root of 117557001 is about 489.8722435224.

The spelling of 117557001 in words is "one hundred seventeen million, five hundred fifty-seven thousand, one".