152363221 has 4 divisors (see below), whose sum is σ = 152956332. Its totient is φ = 151770112.

The previous prime is 152363209. The next prime is 152363251. The reversal of 152363221 is 122363251.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122363251 = 43 ⋅2845657.

It can be written as a sum of positive squares in 2 ways, for example, as 136562596 + 15800625 = 11686^2 + 3975^2 .

It is a cyclic number.

It is not a de Polignac number, because 152363221 - 2⁹ = 152362709 is a prime.

It is a super-2 number, since 2×152363221² = 46429102226989682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152363251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296170 + ... + 296683.

It is an arithmetic number, because the mean of its divisors is an integer number (38239083).

Almost surely, 2^152363221 is an apocalyptic number.

It is an amenable number.

152363221 is a deficient number, since it is larger than the sum of its proper divisors (593111).

152363221 is an equidigital number, since it uses as much as digits as its factorization.

152363221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593110.

The product of its digits is 2160, while the sum is 25.

The square root of 152363221 is about 12343.5497730596. The cubic root of 152363221 is about 534.1050878668.

The spelling of 152363221 in words is "one hundred fifty-two million, three hundred sixty-three thousand, two hundred twenty-one".