97144997 has 2 divisors, whose sum is σ = 97144998. Its totient is φ = 97144996.

The previous prime is 97144951. The next prime is 97145003. The reversal of 97144997 is 79944179.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97101316 + 43681 = 9854^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 97144997 - 2⁸ = 97144741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97144907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48572498 + 48572499.

It is an arithmetic number, because the mean of its divisors is an integer number (48572499).

Almost surely, 2^97144997 is an apocalyptic number.

It is an amenable number.

97144997 is a deficient number, since it is larger than the sum of its proper divisors (1).

97144997 is an equidigital number, since it uses as much as digits as its factorization.

97144997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 571536, while the sum is 50.

The square root of 97144997 is about 9856.2161603731. The cubic root of 97144997 is about 459.6989160810.

The spelling of 97144997 in words is "ninety-seven million, one hundred forty-four thousand, nine hundred ninety-seven".