40572197 has 2 divisors, whose sum is σ = 40572198. Its totient is φ = 40572196.

The previous prime is 40572187. The next prime is 40572229. The reversal of 40572197 is 79127504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23049601 + 17522596 = 4801^2 + 4186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40572197 is a prime.

It is a super-2 number, since 2×40572197² = 3292206338813618, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40572107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20286098 + 20286099.

It is an arithmetic number, because the mean of its divisors is an integer number (20286099).

Almost surely, 2^40572197 is an apocalyptic number.

It is an amenable number.

40572197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40572197 is an equidigital number, since it uses as much as digits as its factorization.

40572197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 40572197 is about 6369.6308370266. The cubic root of 40572197 is about 343.6182131956.

The spelling of 40572197 in words is "forty million, five hundred seventy-two thousand, one hundred ninety-seven".