152520621 has 16 divisors (see below), whose sum is σ = 223687488. Its totient is φ = 92434320.

The previous prime is 152520607. The next prime is 152520629. The reversal of 152520621 is 126025251.

It is a happy number.

It is not a de Polignac number, because 152520621 - 2⁷ = 152520493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 152520591 and 152520600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152520629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15106 + ... + 23091.

It is an arithmetic number, because the mean of its divisors is an integer number (13980468).

Almost surely, 2^152520621 is an apocalyptic number.

152520621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152520621 is a deficient number, since it is larger than the sum of its proper divisors (71166867).

152520621 is an equidigital number, since it uses as much as digits as its factorization.

152520621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38233 (or 38211 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 152520621 is about 12349.9239268912. The cubic root of 152520621 is about 534.2889450291.

Adding to 152520621 its reverse (126025251), we get a palindrome (278545872).

The spelling of 152520621 in words is "one hundred fifty-two million, five hundred twenty thousand, six hundred twenty-one".