97021451 has 2 divisors, whose sum is σ = 97021452. Its totient is φ = 97021450.

The previous prime is 97021417. The next prime is 97021471. The reversal of 97021451 is 15412079.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97021451 - 2¹⁸ = 96759307 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97021471) 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, 48510725 + 48510726.

It is an arithmetic number, because the mean of its divisors is an integer number (48510726).

Almost surely, 2^97021451 is an apocalyptic number.

97021451 is a deficient number, since it is larger than the sum of its proper divisors (1).

97021451 is an equidigital number, since it uses as much as digits as its factorization.

97021451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 97021451 is about 9849.9467511251. The cubic root of 97021451 is about 459.5039564593.

The spelling of 97021451 in words is "ninety-seven million, twenty-one thousand, four hundred fifty-one".