32491453 has 4 divisors (see below), whose sum is σ = 32807008. Its totient is φ = 32175900.

The previous prime is 32491451. The next prime is 32491457. The reversal of 32491453 is 35419423.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32491453 - 2¹ = 32491451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32491451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157623 + ... + 157828.

It is an arithmetic number, because the mean of its divisors is an integer number (8201752).

Almost surely, 2^32491453 is an apocalyptic number.

It is an amenable number.

32491453 is a deficient number, since it is larger than the sum of its proper divisors (315555).

32491453 is a wasteful number, since it uses less digits than its factorization.

32491453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315554.

The product of its digits is 12960, while the sum is 31.

The square root of 32491453 is about 5700.1274547154. The cubic root of 32491453 is about 319.0972374830.

The spelling of 32491453 in words is "thirty-two million, four hundred ninety-one thousand, four hundred fifty-three".