97015421 has 2 divisors, whose sum is σ = 97015422. Its totient is φ = 97015420.

The previous prime is 97015417. The next prime is 97015453. The reversal of 97015421 is 12451079.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 5812921 = 9550^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 97015421 - 2² = 97015417 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97015021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48507710 + 48507711.

It is an arithmetic number, because the mean of its divisors is an integer number (48507711).

Almost surely, 2^97015421 is an apocalyptic number.

It is an amenable number.

97015421 is a deficient number, since it is larger than the sum of its proper divisors (1).

97015421 is an equidigital number, since it uses as much as digits as its factorization.

97015421 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 97015421 is about 9849.6406533437. The cubic root of 97015421 is about 459.4944366874.

The spelling of 97015421 in words is "ninety-seven million, fifteen thousand, four hundred twenty-one".