32157091 has 2 divisors, whose sum is σ = 32157092. Its totient is φ = 32157090.

The previous prime is 32157053. The next prime is 32157121. The reversal of 32157091 is 19075123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32157091 - 2¹⁷ = 32026019 is a prime.

It is not a weakly prime, because it can be changed into another prime (32157001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16078545 + 16078546.

It is an arithmetic number, because the mean of its divisors is an integer number (16078546).

Almost surely, 2^32157091 is an apocalyptic number.

32157091 is a deficient number, since it is larger than the sum of its proper divisors (1).

32157091 is an equidigital number, since it uses as much as digits as its factorization.

32157091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 32157091 is about 5670.7222644034. The cubic root of 32157091 is about 317.9988759635.

The spelling of 32157091 in words is "thirty-two million, one hundred fifty-seven thousand, ninety-one".