32651891 has 2 divisors, whose sum is σ = 32651892. Its totient is φ = 32651890.

The previous prime is 32651863. The next prime is 32651893. The reversal of 32651891 is 19815623.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32651891 - 2¹⁰ = 32650867 is a prime.

It is a super-2 number, since 2×32651891² = 2132291971751762, which contains 22 as substring.

Together with 32651893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (32651893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16325945 + 16325946.

It is an arithmetic number, because the mean of its divisors is an integer number (16325946).

Almost surely, 2^32651891 is an apocalyptic number.

32651891 is a deficient number, since it is larger than the sum of its proper divisors (1).

32651891 is an equidigital number, since it uses as much as digits as its factorization.

32651891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 32651891 is about 5714.1833187254. The cubic root of 32651891 is about 319.6215937192.

The spelling of 32651891 in words is "thirty-two million, six hundred fifty-one thousand, eight hundred ninety-one".