32191457 has 2 divisors, whose sum is σ = 32191458. Its totient is φ = 32191456.

The previous prime is 32191451. The next prime is 32191493. The reversal of 32191457 is 75419123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23804641 + 8386816 = 4879^2 + 2896^2 .

It is a cyclic number.

It is not a de Polignac number, because 32191457 - 2¹⁶ = 32125921 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32191451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16095728 + 16095729.

It is an arithmetic number, because the mean of its divisors is an integer number (16095729).

Almost surely, 2^32191457 is an apocalyptic number.

It is an amenable number.

32191457 is a deficient number, since it is larger than the sum of its proper divisors (1).

32191457 is an equidigital number, since it uses as much as digits as its factorization.

32191457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 32.

The square root of 32191457 is about 5673.7515807444. The cubic root of 32191457 is about 318.1121164996.

The spelling of 32191457 in words is "thirty-two million, one hundred ninety-one thousand, four hundred fifty-seven".