253499493 has 36 divisors (see below), whose sum is σ = 380803968. Its totient is φ = 149778720.

The previous prime is 253499471. The next prime is 253499497. The reversal of 253499493 is 394994352.

It is not a de Polignac number, because 253499493 - 2¹⁷ = 253368421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253499497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1995996 + ... + 1996122.

It is an arithmetic number, because the mean of its divisors is an integer number (10577888).

Almost surely, 2^253499493 is an apocalyptic number.

It is an amenable number.

253499493 is a deficient number, since it is larger than the sum of its proper divisors (127304475).

253499493 is a wasteful number, since it uses less digits than its factorization.

253499493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314 (or 174 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 48.

The square root of 253499493 is about 15921.6674063994. The cubic root of 253499493 is about 632.8863053841.

The spelling of 253499493 in words is "two hundred fifty-three million, four hundred ninety-nine thousand, four hundred ninety-three".