1253800555 has 8 divisors (see below), whose sum is σ = 1719497952. Its totient is φ = 859748928.

The previous prime is 1253800523. The next prime is 1253800571. The reversal of 1253800555 is 5550083521.

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 1253800555 - 2⁵ = 1253800523 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 1253800555.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17911402 + ... + 17911471.

It is an arithmetic number, because the mean of its divisors is an integer number (214937244).

Almost surely, 2^1253800555 is an apocalyptic number.

1253800555 is a deficient number, since it is larger than the sum of its proper divisors (465697397).

1253800555 is an equidigital number, since it uses as much as digits as its factorization.

1253800555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35822885.

The product of its (nonzero) digits is 30000, while the sum is 34.

The square root of 1253800555 is about 35409.0462311540. The cubic root of 1253800555 is about 1078.3079800945.

The spelling of 1253800555 in words is "one billion, two hundred fifty-three million, eight hundred thousand, five hundred fifty-five".