161253275 has 6 divisors (see below), whose sum is σ = 199954092. Its totient is φ = 129002600.

The previous prime is 161253269. The next prime is 161253293. The reversal of 161253275 is 572352161.

It is not a de Polignac number, because 161253275 - 2⁴ = 161253259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3225041 + ... + 3225090.

It is an arithmetic number, because the mean of its divisors is an integer number (33325682).

Almost surely, 2^161253275 is an apocalyptic number.

161253275 is a deficient number, since it is larger than the sum of its proper divisors (38700817).

161253275 is an equidigital number, since it uses as much as digits as its factorization.

161253275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450141 (or 6450136 counting only the distinct ones).

The product of its digits is 12600, while the sum is 32.

The square root of 161253275 is about 12698.5540515446. The cubic root of 161253275 is about 544.2973015834.

The spelling of 161253275 in words is "one hundred sixty-one million, two hundred fifty-three thousand, two hundred seventy-five".