152457391 has 4 divisors (see below), whose sum is σ = 152706712. Its totient is φ = 152208072.

The previous prime is 152457373. The next prime is 152457397. The reversal of 152457391 is 193754251.

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 152457391 - 2⁵ = 152457359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 152457391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152457397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123741 + ... + 124966.

It is an arithmetic number, because the mean of its divisors is an integer number (38176678).

Almost surely, 2^152457391 is an apocalyptic number.

152457391 is a deficient number, since it is larger than the sum of its proper divisors (249321).

152457391 is an equidigital number, since it uses as much as digits as its factorization.

152457391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249320.

The product of its digits is 37800, while the sum is 37.

The square root of 152457391 is about 12347.3637267232. The cubic root of 152457391 is about 534.2151019878.

The spelling of 152457391 in words is "one hundred fifty-two million, four hundred fifty-seven thousand, three hundred ninety-one".