152153021 has 4 divisors (see below), whose sum is σ = 152219100. Its totient is φ = 152086944.

The previous prime is 152153017. The next prime is 152153039. The reversal of 152153021 is 120351251.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120351251 = 1721 ⋅69931.

It can be written as a sum of positive squares in 2 ways, for example, as 57304900 + 94848121 = 7570^2 + 9739^2 .

It is a cyclic number.

It is not a de Polignac number, because 152153021 - 2² = 152153017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 152152984 and 152153002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152153011) 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, 29456 + ... + 34233.

It is an arithmetic number, because the mean of its divisors is an integer number (38054775).

Almost surely, 2^152153021 is an apocalyptic number.

It is an amenable number.

152153021 is a deficient number, since it is larger than the sum of its proper divisors (66079).

152153021 is an equidigital number, since it uses as much as digits as its factorization.

152153021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66078.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 152153021 is about 12335.0322658678. The cubic root of 152153021 is about 533.8593580531.

The spelling of 152153021 in words is "one hundred fifty-two million, one hundred fifty-three thousand, twenty-one".