253263649 has 8 divisors (see below), whose sum is σ = 264543552. Its totient is φ = 242006160.

The previous prime is 253263629. The next prime is 253263653. The reversal of 253263649 is 946362352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253263649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253263629) 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, 20047 + ... + 30139.

It is an arithmetic number, because the mean of its divisors is an integer number (33067944).

Almost surely, 2^253263649 is an apocalyptic number.

It is an amenable number.

253263649 is a deficient number, since it is larger than the sum of its proper divisors (11279903).

253263649 is a wasteful number, since it uses less digits than its factorization.

253263649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11207.

The product of its digits is 233280, while the sum is 40.

The square root of 253263649 is about 15914.2592978750. The cubic root of 253263649 is about 632.6899752732.

The spelling of 253263649 in words is "two hundred fifty-three million, two hundred sixty-three thousand, six hundred forty-nine".