97861853 has 2 divisors, whose sum is σ = 97861854. Its totient is φ = 97861852.

The previous prime is 97861831. The next prime is 97861861. The reversal of 97861853 is 35816879.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59644729 + 38217124 = 7723^2 + 6182^2 .

It is a cyclic number.

It is not a de Polignac number, because 97861853 - 2⁸ = 97861597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97861798 and 97861807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97861453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48930926 + 48930927.

It is an arithmetic number, because the mean of its divisors is an integer number (48930927).

Almost surely, 2^97861853 is an apocalyptic number.

It is an amenable number.

97861853 is a deficient number, since it is larger than the sum of its proper divisors (1).

97861853 is an equidigital number, since it uses as much as digits as its factorization.

97861853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 97861853 is about 9892.5149987250. The cubic root of 97861853 is about 460.8268885742.

The spelling of 97861853 in words is "ninety-seven million, eight hundred sixty-one thousand, eight hundred fifty-three".