253485993 has 8 divisors (see below), whose sum is σ = 345172608. Its totient is φ = 165395024.

The previous prime is 253485979. The next prime is 253486043. The reversal of 253485993 is 399584352.

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 253485993 - 2⁵ = 253485961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253485923) 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 7 ways as a sum of consecutive naturals, for example, 898746 + ... + 899027.

It is an arithmetic number, because the mean of its divisors is an integer number (43146576).

Almost surely, 2^253485993 is an apocalyptic number.

It is an amenable number.

253485993 is a deficient number, since it is larger than the sum of its proper divisors (91686615).

253485993 is a wasteful number, since it uses less digits than its factorization.

253485993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1797823.

The product of its digits is 1166400, while the sum is 48.

The square root of 253485993 is about 15921.2434501832. The cubic root of 253485993 is about 632.8750704940.

The spelling of 253485993 in words is "two hundred fifty-three million, four hundred eighty-five thousand, nine hundred ninety-three".