32977921 has 2 divisors, whose sum is σ = 32977922. Its totient is φ = 32977920.

The previous prime is 32977891. The next prime is 32977949. The reversal of 32977921 is 12977923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29866225 + 3111696 = 5465^2 + 1764^2 .

It is a cyclic number.

It is not a de Polignac number, because 32977921 - 2¹⁵ = 32945153 is a prime.

It is not a weakly prime, because it can be changed into another prime (32977961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16488960 + 16488961.

It is an arithmetic number, because the mean of its divisors is an integer number (16488961).

Almost surely, 2^32977921 is an apocalyptic number.

It is an amenable number.

32977921 is a deficient number, since it is larger than the sum of its proper divisors (1).

32977921 is an equidigital number, since it uses as much as digits as its factorization.

32977921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47628, while the sum is 40.

The square root of 32977921 is about 5742.6405947090. The cubic root of 32977921 is about 320.6818825446.

The spelling of 32977921 in words is "thirty-two million, nine hundred seventy-seven thousand, nine hundred twenty-one".