253664453 has 8 divisors (see below), whose sum is σ = 290335872. Its totient is φ = 217101456.

The previous prime is 253664449. The next prime is 253664491. The reversal of 253664453 is 354466352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253664453 - 2² = 253664449 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 (253664053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22025 + ... + 31502.

It is an arithmetic number, because the mean of its divisors is an integer number (36291984).

Almost surely, 2^253664453 is an apocalyptic number.

It is an amenable number.

253664453 is a deficient number, since it is larger than the sum of its proper divisors (36671419).

253664453 is an equidigital number, since it uses as much as digits as its factorization.

253664453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54211.

The product of its digits is 259200, while the sum is 38.

The square root of 253664453 is about 15926.8469258670. The cubic root of 253664453 is about 633.0235552148.

The spelling of 253664453 in words is "two hundred fifty-three million, six hundred sixty-four thousand, four hundred fifty-three".