252321101 has 4 divisors (see below), whose sum is σ = 252628512. Its totient is φ = 252013692.

The previous prime is 252321077. The next prime is 252321103. The reversal of 252321101 is 101123252.

It is a happy number.

252321101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 252321101 - 2¹⁰ = 252320077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252321101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252321103) 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, 152471 + ... + 154116.

It is an arithmetic number, because the mean of its divisors is an integer number (63157128).

Almost surely, 2^252321101 is an apocalyptic number.

It is an amenable number.

252321101 is a deficient number, since it is larger than the sum of its proper divisors (307411).

252321101 is an equidigital number, since it uses as much as digits as its factorization.

252321101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307410.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 252321101 is about 15884.6183775374. The cubic root of 252321101 is about 631.9041249172.

Adding to 252321101 its reverse (101123252), we get a palindrome (353444353).

The spelling of 252321101 in words is "two hundred fifty-two million, three hundred twenty-one thousand, one hundred one".