97725847 has 2 divisors, whose sum is σ = 97725848. Its totient is φ = 97725846.

The previous prime is 97725811. The next prime is 97725871. The reversal of 97725847 is 74852779.

It is a strong prime.

It is an emirp because it is prime and its reverse (74852779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97725847 - 2¹¹ = 97723799 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97725847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97725247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48862923 + 48862924.

It is an arithmetic number, because the mean of its divisors is an integer number (48862924).

Almost surely, 2^97725847 is an apocalyptic number.

97725847 is a deficient number, since it is larger than the sum of its proper divisors (1).

97725847 is an equidigital number, since it uses as much as digits as its factorization.

97725847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 49.

The square root of 97725847 is about 9885.6384214678. The cubic root of 97725847 is about 460.6133076362.

The spelling of 97725847 in words is "ninety-seven million, seven hundred twenty-five thousand, eight hundred forty-seven".