161253453 has 8 divisors (see below), whose sum is σ = 215823168. Its totient is φ = 107093024.

The previous prime is 161253409. The next prime is 161253467. The reversal of 161253453 is 354352161.

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

It is a cyclic number.

It is not a de Polignac number, because 161253453 - 2¹² = 161249357 is a prime.

It is a super-2 number, since 2×161253453² = 52005352208846418, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161253453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161253553) 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, 101400 + ... + 102977.

It is an arithmetic number, because the mean of its divisors is an integer number (26977896).

Almost surely, 2^161253453 is an apocalyptic number.

It is an amenable number.

161253453 is a deficient number, since it is larger than the sum of its proper divisors (54569715).

161253453 is a wasteful number, since it uses less digits than its factorization.

161253453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204643.

The product of its digits is 10800, while the sum is 30.

The square root of 161253453 is about 12698.5610602147. The cubic root of 161253453 is about 544.2975018581.

The spelling of 161253453 in words is "one hundred sixty-one million, two hundred fifty-three thousand, four hundred fifty-three".