253000621 has 4 divisors (see below), whose sum is σ = 264000672. Its totient is φ = 242000572.

The previous prime is 253000607. The next prime is 253000661. The reversal of 253000621 is 126000352.

It is a happy number.

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 253000621 - 2⁵ = 253000589 is a prime.

It is a Duffinian number.

253000621 is a modest number, since divided by 621 gives 253 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253000661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5499991 + ... + 5500036.

It is an arithmetic number, because the mean of its divisors is an integer number (66000168).

Almost surely, 2^253000621 is an apocalyptic number.

It is an amenable number.

253000621 is a deficient number, since it is larger than the sum of its proper divisors (11000051).

253000621 is a wasteful number, since it uses less digits than its factorization.

253000621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11000050.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 253000621 is about 15905.9932415426. The cubic root of 253000621 is about 632.4708718171.

Adding to 253000621 its reverse (126000352), we get a palindrome (379000973).

The spelling of 253000621 in words is "two hundred fifty-three million, six hundred twenty-one", and thus it is an aban number.