252321553 has 4 divisors (see below), whose sum is σ = 275259888. Its totient is φ = 229383220.

The previous prime is 252321551. The next prime is 252321571. The reversal of 252321553 is 355123252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 252321553 - 2¹ = 252321551 is a prime.

It is a super-2 number, since 2×252321553² = 127332332216663618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252321551) 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, 11469151 + ... + 11469172.

It is an arithmetic number, because the mean of its divisors is an integer number (68814972).

Almost surely, 2^252321553 is an apocalyptic number.

It is an amenable number.

252321553 is a deficient number, since it is larger than the sum of its proper divisors (22938335).

252321553 is a wasteful number, since it uses less digits than its factorization.

252321553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22938334.

The product of its digits is 9000, while the sum is 28.

The square root of 252321553 is about 15884.6326051313. The cubic root of 252321553 is about 631.9045022413.

The spelling of 252321553 in words is "two hundred fifty-two million, three hundred twenty-one thousand, five hundred fifty-three".