40511197 has 2 divisors, whose sum is σ = 40511198. Its totient is φ = 40511196.

The previous prime is 40511179. The next prime is 40511213. The reversal of 40511197 is 79111504.

Together with previous prime (40511179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29713401 + 10797796 = 5451^2 + 3286^2 .

It is a cyclic number.

It is not a de Polignac number, because 40511197 - 2⁷ = 40511069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40511147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20255598 + 20255599.

It is an arithmetic number, because the mean of its divisors is an integer number (20255599).

Almost surely, 2^40511197 is an apocalyptic number.

It is an amenable number.

40511197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40511197 is an equidigital number, since it uses as much as digits as its factorization.

40511197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 40511197 is about 6364.8406892867. The cubic root of 40511197 is about 343.4459176656.

The spelling of 40511197 in words is "forty million, five hundred eleven thousand, one hundred ninety-seven".