97825771 has 2 divisors, whose sum is σ = 97825772. Its totient is φ = 97825770.

The previous prime is 97825751. The next prime is 97825799. The reversal of 97825771 is 17752879.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 97825771 - 2¹⁹ = 97301483 is a prime.

It is not a weakly prime, because it can be changed into another prime (97825711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48912885 + 48912886.

It is an arithmetic number, because the mean of its divisors is an integer number (48912886).

Almost surely, 2^97825771 is an apocalyptic number.

97825771 is a deficient number, since it is larger than the sum of its proper divisors (1).

97825771 is an equidigital number, since it uses as much as digits as its factorization.

97825771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 46.

The square root of 97825771 is about 9890.6911285309. The cubic root of 97825771 is about 460.7702454620.

It can be divided in two parts, 97825 and 771, that added together give a square (98596 = 314²).

The spelling of 97825771 in words is "ninety-seven million, eight hundred twenty-five thousand, seven hundred seventy-one".