152503221 has 8 divisors (see below), whose sum is σ = 218979040. Its totient is φ = 93848112.

The previous prime is 152503217. The next prime is 152503249. The reversal of 152503221 is 122305251.

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

It is not a de Polignac number, because 152503221 - 2² = 152503217 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 (152503201) 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 7 ways as a sum of consecutive naturals, for example, 1955131 + ... + 1955208.

It is an arithmetic number, because the mean of its divisors is an integer number (27372380).

Almost surely, 2^152503221 is an apocalyptic number.

It is an amenable number.

152503221 is a deficient number, since it is larger than the sum of its proper divisors (66475819).

152503221 is a wasteful number, since it uses less digits than its factorization.

152503221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3910355.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 152503221 is about 12349.2194490178. The cubic root of 152503221 is about 534.2686265062.

Adding to 152503221 its reverse (122305251), we get a palindrome (274808472).

The spelling of 152503221 in words is "one hundred fifty-two million, five hundred three thousand, two hundred twenty-one".