253811291 has 16 divisors (see below), whose sum is σ = 279613440. Its totient is φ = 229469760.

The previous prime is 253811287. The next prime is 253811351. The reversal of 253811291 is 192118352.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 253811291 - 2² = 253811287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253811281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40046 + ... + 45948.

It is an arithmetic number, because the mean of its divisors is an integer number (17475840).

Almost surely, 2^253811291 is an apocalyptic number.

253811291 is a deficient number, since it is larger than the sum of its proper divisors (25802149).

253811291 is a wasteful number, since it uses less digits than its factorization.

253811291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6026.

The product of its digits is 4320, while the sum is 32.

The square root of 253811291 is about 15931.4560225988. The cubic root of 253811291 is about 633.1456771516.

The spelling of 253811291 in words is "two hundred fifty-three million, eight hundred eleven thousand, two hundred ninety-one".