97871563 has 2 divisors, whose sum is σ = 97871564. Its totient is φ = 97871562.

The previous prime is 97871561. The next prime is 97871573. The reversal of 97871563 is 36517879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97871563 - 2¹ = 97871561 is a prime.

Together with 97871561, it forms a pair of twin primes.

It is equal to p_5645998 and since 97871563 and 5645998 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (97871561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48935781 + 48935782.

It is an arithmetic number, because the mean of its divisors is an integer number (48935782).

Almost surely, 2^97871563 is an apocalyptic number.

97871563 is a deficient number, since it is larger than the sum of its proper divisors (1).

97871563 is an equidigital number, since it uses as much as digits as its factorization.

97871563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 97871563 is about 9893.0057616480. The cubic root of 97871563 is about 460.8421293821.

The spelling of 97871563 in words is "ninety-seven million, eight hundred seventy-one thousand, five hundred sixty-three".