152553621 has 16 divisors (see below), whose sum is σ = 222258240. Its totient is φ = 92305920.

The previous prime is 152553613. The next prime is 152553623. The reversal of 152553621 is 126355251.

It is a happy number.

It is not a de Polignac number, because 152553621 - 2³ = 152553613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152553623) 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 15 ways as a sum of consecutive naturals, for example, 18775 + ... + 25643.

It is an arithmetic number, because the mean of its divisors is an integer number (13891140).

Almost surely, 2^152553621 is an apocalyptic number.

152553621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

152553621 is a deficient number, since it is larger than the sum of its proper divisors (69704619).

152553621 is a wasteful number, since it uses less digits than its factorization.

152553621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7556.

The product of its digits is 9000, while the sum is 30.

The square root of 152553621 is about 12351.2598952496. The cubic root of 152553621 is about 534.3274759145.

The spelling of 152553621 in words is "one hundred fifty-two million, five hundred fifty-three thousand, six hundred twenty-one".