253611361 has 4 divisors (see below), whose sum is σ = 257183424. Its totient is φ = 250039300.

The previous prime is 253611353. The next prime is 253611367. The reversal of 253611361 is 163116352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 253611361 - 2³ = 253611353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253611367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1785925 + ... + 1786066.

It is an arithmetic number, because the mean of its divisors is an integer number (64295856).

Almost surely, 2^253611361 is an apocalyptic number.

It is an amenable number.

253611361 is a deficient number, since it is larger than the sum of its proper divisors (3572063).

253611361 is an equidigital number, since it uses as much as digits as its factorization.

253611361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572062.

The product of its digits is 3240, while the sum is 28.

The square root of 253611361 is about 15925.1800931732. The cubic root of 253611361 is about 632.9793881649.

The spelling of 253611361 in words is "two hundred fifty-three million, six hundred eleven thousand, three hundred sixty-one".