253165161001 has 4 divisors (see below), whose sum is σ = 257315409604. Its totient is φ = 249014912400.

The previous prime is 253165160959. The next prime is 253165161023. The reversal of 253165161001 is 100161561352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109611317776 + 143553843225 = 331076^2 + 378885^2 .

It is a cyclic number.

It is not a de Polignac number, because 253165161001 - 2³⁷ = 115726207529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253165164001) 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, 2075124210 + ... + 2075124331.

It is an arithmetic number, because the mean of its divisors is an integer number (64328852401).

Almost surely, 2^253165161001 is an apocalyptic number.

It is an amenable number.

253165161001 is a deficient number, since it is larger than the sum of its proper divisors (4150248603).

253165161001 is an equidigital number, since it uses as much as digits as its factorization.

253165161001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150248602.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 253165161001 in words is "two hundred fifty-three billion, one hundred sixty-five million, one hundred sixty-one thousand, one".