3972251 has 2 divisors, whose sum is σ = 3972252. Its totient is φ = 3972250.

The previous prime is 3972233. The next prime is 3972263. The reversal of 3972251 is 1522793.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3972251 - 2⁶ = 3972187 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3972151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986125 + 1986126.

It is an arithmetic number, because the mean of its divisors is an integer number (1986126).

Almost surely, 2^3972251 is an apocalyptic number.

3972251 is a deficient number, since it is larger than the sum of its proper divisors (1).

3972251 is an equidigital number, since it uses as much as digits as its factorization.

3972251 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3972251 is about 1993.0506767265. The cubic root of 3972251 is about 158.3721798190.

The spelling of 3972251 in words is "three million, nine hundred seventy-two thousand, two hundred fifty-one".