253032649 has 3 divisors (see below), whose sum is σ = 253048557. Its totient is φ = 253016742.

The previous prime is 253032629. The next prime is 253032701. The reversal of 253032649 is 946230352.

The square root of 253032649 is 15907.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 253032649 - 2⁵ = 253032617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253032629) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7954 + ... + 23860.

It is an arithmetic number, because the mean of its divisors is an integer number (84349519).

Almost surely, 2^253032649 is an apocalyptic number.

253032649 is the 15907-th square number.

253032649 is the 7954-th centered octagonal number.

It is an amenable number.

253032649 is a deficient number, since it is larger than the sum of its proper divisors (15908).

253032649 is an frugal number, since it uses more digits than its factorization.

253032649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31814 (or 15907 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The cubic root of 253032649 is about 632.4975593963.

The spelling of 253032649 in words is "two hundred fifty-three million, thirty-two thousand, six hundred forty-nine".