32497891 has 2 divisors, whose sum is σ = 32497892. Its totient is φ = 32497890.

The previous prime is 32497879. The next prime is 32497937. The reversal of 32497891 is 19879423.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 32497891 - 2⁷ = 32497763 is a prime.

It is a super-2 number, since 2×32497891² = 2112225838895762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (32497841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16248945 + 16248946.

It is an arithmetic number, because the mean of its divisors is an integer number (16248946).

Almost surely, 2^32497891 is an apocalyptic number.

32497891 is a deficient number, since it is larger than the sum of its proper divisors (1).

32497891 is an equidigital number, since it uses as much as digits as its factorization.

32497891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 32497891 is about 5700.6921509585. The cubic root of 32497891 is about 319.1183118698.

The spelling of 32497891 in words is "thirty-two million, four hundred ninety-seven thousand, eight hundred ninety-one".