97443187 has 2 divisors, whose sum is σ = 97443188. Its totient is φ = 97443186.

The previous prime is 97443139. The next prime is 97443211. The reversal of 97443187 is 78134479.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97443187 - 2¹⁵ = 97410419 is a prime.

It is not a weakly prime, because it can be changed into another prime (97443107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48721593 + 48721594.

It is an arithmetic number, because the mean of its divisors is an integer number (48721594).

Almost surely, 2^97443187 is an apocalyptic number.

97443187 is a deficient number, since it is larger than the sum of its proper divisors (1).

97443187 is an equidigital number, since it uses as much as digits as its factorization.

97443187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 97443187 is about 9871.3315717790. The cubic root of 97443187 is about 460.1687896646.

The spelling of 97443187 in words is "ninety-seven million, four hundred forty-three thousand, one hundred eighty-seven".