397525117 has 8 divisors (see below), whose sum is σ = 433825920. Its totient is φ = 361251360.

The previous prime is 397525081. The next prime is 397525129. The reversal of 397525117 is 711525793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397525117 - 2⁷ = 397524989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 397525117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397525157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35484 + ... + 45322.

It is an arithmetic number, because the mean of its divisors is an integer number (54228240).

Almost surely, 2^397525117 is an apocalyptic number.

It is an amenable number.

397525117 is a deficient number, since it is larger than the sum of its proper divisors (36300803).

397525117 is a wasteful number, since it uses less digits than its factorization.

397525117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13523.

The product of its digits is 66150, while the sum is 40.

The square root of 397525117 is about 19938.0319239387. The cubic root of 397525117 is about 735.2835637476.

It can be divided in two parts, 3975 and 25117, that added together give a palindrome (29092).

The spelling of 397525117 in words is "three hundred ninety-seven million, five hundred twenty-five thousand, one hundred seventeen".