32957921 has 2 divisors, whose sum is σ = 32957922. Its totient is φ = 32957920.

The previous prime is 32957893. The next prime is 32957923. The reversal of 32957921 is 12975923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 2927521 = 5480^2 + 1711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32957921 is a prime.

Together with 32957923, 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 (32957923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16478960 + 16478961.

It is an arithmetic number, because the mean of its divisors is an integer number (16478961).

Almost surely, 2^32957921 is an apocalyptic number.

It is an amenable number.

32957921 is a deficient number, since it is larger than the sum of its proper divisors (1).

32957921 is an equidigital number, since it uses as much as digits as its factorization.

32957921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 38.

The square root of 32957921 is about 5740.8989714155. The cubic root of 32957921 is about 320.6170418426.

The spelling of 32957921 in words is "thirty-two million, nine hundred fifty-seven thousand, nine hundred twenty-one".