152117391 has 8 divisors (see below), whose sum is σ = 203843200. Its totient is φ = 100901592.

The previous prime is 152117387. The next prime is 152117417. The reversal of 152117391 is 193711251.

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

It is not a de Polignac number, because 152117391 - 2² = 152117387 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 (152117321) 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, 126805 + ... + 127998.

It is an arithmetic number, because the mean of its divisors is an integer number (25480400).

Almost surely, 2^152117391 is an apocalyptic number.

152117391 is a deficient number, since it is larger than the sum of its proper divisors (51725809).

152117391 is a wasteful number, since it uses less digits than its factorization.

152117391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255005.

The product of its digits is 1890, while the sum is 30.

The square root of 152117391 is about 12333.5879207958. The cubic root of 152117391 is about 533.8176831354.

The spelling of 152117391 in words is "one hundred fifty-two million, one hundred seventeen thousand, three hundred ninety-one".