32720951 has 2 divisors, whose sum is σ = 32720952. Its totient is φ = 32720950.

The previous prime is 32720917. The next prime is 32720953. The reversal of 32720951 is 15902723.

It is a strong prime.

It is an emirp because it is prime and its reverse (15902723) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 32720951 - 2⁶ = 32720887 is a prime.

It is a Sophie Germain prime.

Together with 32720953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32720953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16360475 + 16360476.

It is an arithmetic number, because the mean of its divisors is an integer number (16360476).

Almost surely, 2^32720951 is an apocalyptic number.

32720951 is a deficient number, since it is larger than the sum of its proper divisors (1).

32720951 is an equidigital number, since it uses as much as digits as its factorization.

32720951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 32720951 is about 5720.2229851641. Note that the first 3 decimals coincide. The cubic root of 32720951 is about 319.8467723439.

The spelling of 32720951 in words is "thirty-two million, seven hundred twenty thousand, nine hundred fifty-one".