40152197 has 2 divisors, whose sum is σ = 40152198. Its totient is φ = 40152196.

The previous prime is 40152179. The next prime is 40152199. The reversal of 40152197 is 79125104.

Together with previous prime (40152179) 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., 39513796 + 638401 = 6286^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 40152197 - 2¹⁰ = 40151173 is a prime.

It is a super-2 number, since 2×40152197² = 3224397847853618, which contains 22 as substring.

Together with 40152199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40152199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20076098 + 20076099.

It is an arithmetic number, because the mean of its divisors is an integer number (20076099).

Almost surely, 2^40152197 is an apocalyptic number.

It is an amenable number.

40152197 is a deficient number, since it is larger than the sum of its proper divisors (1).

40152197 is an equidigital number, since it uses as much as digits as its factorization.

40152197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 40152197 is about 6336.5761259532. The cubic root of 40152197 is about 342.4283957084.

The spelling of 40152197 in words is "forty million, one hundred fifty-two thousand, one hundred ninety-seven".