152873621 has 4 divisors (see below), whose sum is σ = 153132012. Its totient is φ = 152615232.

The previous prime is 152873599. The next prime is 152873627. The reversal of 152873621 is 126378251.

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: 126378251 = 431 ⋅293221.

It can be written as a sum of positive squares in 2 ways, for example, as 44422225 + 108451396 = 6665^2 + 10414^2 .

It is a cyclic number.

It is not a de Polignac number, because 152873621 - 2¹⁰ = 152872597 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 (152873627) 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, 128306 + ... + 129491.

It is an arithmetic number, because the mean of its divisors is an integer number (38283003).

Almost surely, 2^152873621 is an apocalyptic number.

It is an amenable number.

152873621 is a deficient number, since it is larger than the sum of its proper divisors (258391).

152873621 is an equidigital number, since it uses as much as digits as its factorization.

152873621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258390.

The product of its digits is 20160, while the sum is 35.

The square root of 152873621 is about 12364.2072531966. The cubic root of 152873621 is about 534.7008208766.

The spelling of 152873621 in words is "one hundred fifty-two million, eight hundred seventy-three thousand, six hundred twenty-one".