1253497161 has 8 divisors (see below), whose sum is σ = 1910090944. Its totient is φ = 716284080.

The previous prime is 1253497151. The next prime is 1253497169. The reversal of 1253497161 is 1617943521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253497161 - 2⁵ = 1253497129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1253497169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29845150 + ... + 29845191.

It is an arithmetic number, because the mean of its divisors is an integer number (238761368).

Almost surely, 2^1253497161 is an apocalyptic number.

It is an amenable number.

1253497161 is a deficient number, since it is larger than the sum of its proper divisors (656593783).

1253497161 is an equidigital number, since it uses as much as digits as its factorization.

1253497161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59690351.

The product of its digits is 45360, while the sum is 39.

The square root of 1253497161 is about 35404.7618407468. The cubic root of 1253497161 is about 1078.2209969451.

The spelling of 1253497161 in words is "one billion, two hundred fifty-three million, four hundred ninety-seven thousand, one hundred sixty-one".