161232453 has 12 divisors (see below), whose sum is σ = 234456300. Its totient is φ = 106766016.

The previous prime is 161232451. The next prime is 161232481. The reversal of 161232453 is 354232161.

161232453 is a `hidden beast` number, since 1 + 612 + 3 + 2 + 45 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23357889 + 137874564 = 4833^2 + 11742^2 .

It is not a de Polignac number, because 161232453 - 2¹ = 161232451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161232451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58776 + ... + 61457.

It is an arithmetic number, because the mean of its divisors is an integer number (19538025).

Almost surely, 2^161232453 is an apocalyptic number.

It is an amenable number.

161232453 is a deficient number, since it is larger than the sum of its proper divisors (73223847).

161232453 is a wasteful number, since it uses less digits than its factorization.

161232453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120388 (or 120385 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 161232453 is about 12697.7341679530. The cubic root of 161232453 is about 544.2738729197.

The spelling of 161232453 in words is "one hundred sixty-one million, two hundred thirty-two thousand, four hundred fifty-three".