97051921 has 2 divisors, whose sum is σ = 97051922. Its totient is φ = 97051920.

The previous prime is 97051909. The next prime is 97051931. The reversal of 97051921 is 12915079.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87160896 + 9891025 = 9336^2 + 3145^2 .

It is a cyclic number.

It is not a de Polignac number, because 97051921 - 2¹⁹ = 96527633 is a prime.

It is not a weakly prime, because it can be changed into another prime (97051901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48525960 + 48525961.

It is an arithmetic number, because the mean of its divisors is an integer number (48525961).

Almost surely, 2^97051921 is an apocalyptic number.

It is an amenable number.

97051921 is a deficient number, since it is larger than the sum of its proper divisors (1).

97051921 is an equidigital number, since it uses as much as digits as its factorization.

97051921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 97051921 is about 9851.4933385756. The cubic root of 97051921 is about 459.5520544829.

The spelling of 97051921 in words is "ninety-seven million, fifty-one thousand, nine hundred twenty-one".