253637161 has 16 divisors (see below), whose sum is σ = 280074240. Its totient is φ = 228614400.

The previous prime is 253637149. The next prime is 253637173. The reversal of 253637161 is 161736352.

253637161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253637149) and next prime (253637173).

It is a 6-Lehmer number, since φ(253637161) divides (253637161-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 253637161 - 2¹⁷ = 253506089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253637101) 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, 60586 + ... + 64636.

It is an arithmetic number, because the mean of its divisors is an integer number (17504640).

Almost surely, 2^253637161 is an apocalyptic number.

It is an amenable number.

253637161 is a deficient number, since it is larger than the sum of its proper divisors (26437079).

253637161 is a wasteful number, since it uses less digits than its factorization.

253637161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224.

The product of its digits is 22680, while the sum is 34.

The square root of 253637161 is about 15925.9901105080. The cubic root of 253637161 is about 633.0008518648. Note that the first 3 decimals are identical.

The spelling of 253637161 in words is "two hundred fifty-three million, six hundred thirty-seven thousand, one hundred sixty-one".