253290649 has 2 divisors, whose sum is σ = 253290650. Its totient is φ = 253290648.

The previous prime is 253290643. The next prime is 253290659. The reversal of 253290649 is 946092352.

253290649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217769049 + 35521600 = 14757^2 + 5960^2 .

It is a cyclic number.

It is not a de Polignac number, because 253290649 - 2⁵ = 253290617 is a prime.

It is not a weakly prime, because it can be changed into another prime (253290643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126645324 + 126645325.

It is an arithmetic number, because the mean of its divisors is an integer number (126645325).

Almost surely, 2^253290649 is an apocalyptic number.

It is an amenable number.

253290649 is a deficient number, since it is larger than the sum of its proper divisors (1).

253290649 is an equidigital number, since it uses as much as digits as its factorization.

253290649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 253290649 is about 15915.1075711099. The cubic root of 253290649 is about 632.7124578027.

The spelling of 253290649 in words is "two hundred fifty-three million, two hundred ninety thousand, six hundred forty-nine".