97821195 has 16 divisors (see below), whose sum is σ = 156885792. Its totient is φ = 52047360.

The previous prime is 97821193. The next prime is 97821209. The reversal of 97821195 is 59112879.

It is not a de Polignac number, because 97821195 - 2¹ = 97821193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (97821193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1036 + ... + 14025.

It is an arithmetic number, because the mean of its divisors is an integer number (9805362).

Almost surely, 2^97821195 is an apocalyptic number.

97821195 is a deficient number, since it is larger than the sum of its proper divisors (59064597).

97821195 is a wasteful number, since it uses less digits than its factorization.

97821195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15502.

The product of its digits is 45360, while the sum is 42.

The square root of 97821195 is about 9890.4597971985. The cubic root of 97821195 is about 460.7630608606.

The spelling of 97821195 in words is "ninety-seven million, eight hundred twenty-one thousand, one hundred ninety-five".