43197061 has 2 divisors, whose sum is σ = 43197062. Its totient is φ = 43197060.

The previous prime is 43197053. The next prime is 43197071. The reversal of 43197061 is 16079134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42185025 + 1012036 = 6495^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 43197061 - 2³ = 43197053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43197031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21598530 + 21598531.

It is an arithmetic number, because the mean of its divisors is an integer number (21598531).

Almost surely, 2^43197061 is an apocalyptic number.

It is an amenable number.

43197061 is a deficient number, since it is larger than the sum of its proper divisors (1).

43197061 is an equidigital number, since it uses as much as digits as its factorization.

43197061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 43197061 is about 6572.4471089542. The cubic root of 43197061 is about 350.8741712864.

It can be divided in two parts, 431970 and 61, that multiplied together give a triangular number (26350170 = T₇₂₅₉).

The spelling of 43197061 in words is "forty-three million, one hundred ninety-seven thousand, sixty-one".