152257447 has 4 divisors (see below), whose sum is σ = 158877360. Its totient is φ = 145637536.

The previous prime is 152257439. The next prime is 152257451. The reversal of 152257447 is 744752251.

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 152257447 - 2³ = 152257439 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 (152257747) 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, 3309922 + ... + 3309967.

It is an arithmetic number, because the mean of its divisors is an integer number (39719340).

Almost surely, 2^152257447 is an apocalyptic number.

152257447 is a deficient number, since it is larger than the sum of its proper divisors (6619913).

152257447 is an equidigital number, since it uses as much as digits as its factorization.

152257447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6619912.

The product of its digits is 78400, while the sum is 37.

The square root of 152257447 is about 12339.2644432316. The cubic root of 152257447 is about 533.9814633038.

The spelling of 152257447 in words is "one hundred fifty-two million, two hundred fifty-seven thousand, four hundred forty-seven".