253876649 has 8 divisors (see below), whose sum is σ = 273576072. Its totient is φ = 234201600.

The previous prime is 253876631. The next prime is 253876661. The reversal of 253876649 is 946678352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9517225 + 244359424 = 3085^2 + 15632^2 .

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 253876649 - 2⁸ = 253876393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 253876597 and 253876606.

It is not an unprimeable number, because it can be changed into a prime (253876619) 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, 19577 + ... + 29849.

It is an arithmetic number, because the mean of its divisors is an integer number (34197009).

Almost surely, 2^253876649 is an apocalyptic number.

It is an amenable number.

253876649 is a deficient number, since it is larger than the sum of its proper divisors (19699423).

253876649 is a wasteful number, since it uses less digits than its factorization.

253876649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12187.

The product of its digits is 2177280, while the sum is 50.

The square root of 253876649 is about 15933.5071155098. The cubic root of 253876649 is about 633.2000188157.

The spelling of 253876649 in words is "two hundred fifty-three million, eight hundred seventy-six thousand, six hundred forty-nine".