251255453 has 4 divisors (see below), whose sum is σ = 255514080. Its totient is φ = 246996828.

The previous prime is 251255447. The next prime is 251255491. The reversal of 251255453 is 354552152.

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 251255453 - 2⁴ = 251255437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251254453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2129225 + ... + 2129342.

It is an arithmetic number, because the mean of its divisors is an integer number (63878520).

Almost surely, 2^251255453 is an apocalyptic number.

It is an amenable number.

251255453 is a deficient number, since it is larger than the sum of its proper divisors (4258627).

251255453 is an equidigital number, since it uses as much as digits as its factorization.

251255453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4258626.

The product of its digits is 30000, while the sum is 32.

The square root of 251255453 is about 15851.0394927273. The cubic root of 251255453 is about 631.0132791059.

The spelling of 251255453 in words is "two hundred fifty-one million, two hundred fifty-five thousand, four hundred fifty-three".