253078555 has 4 divisors (see below), whose sum is σ = 303694272. Its totient is φ = 202462840.

The previous prime is 253078543. The next prime is 253078561. The reversal of 253078555 is 555870352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 253078555 - 2⁵ = 253078523 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25307851 + ... + 25307860.

It is an arithmetic number, because the mean of its divisors is an integer number (75923568).

Almost surely, 2^253078555 is an apocalyptic number.

253078555 is a deficient number, since it is larger than the sum of its proper divisors (50615717).

253078555 is an equidigital number, since it uses as much as digits as its factorization.

253078555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50615716.

The product of its (nonzero) digits is 210000, while the sum is 40.

The square root of 253078555 is about 15908.4428842046. The cubic root of 253078555 is about 632.5358069997.

The spelling of 253078555 in words is "two hundred fifty-three million, seventy-eight thousand, five hundred fifty-five".