40373251 has 2 divisors, whose sum is σ = 40373252. Its totient is φ = 40373250.

The previous prime is 40373239. The next prime is 40373261. The reversal of 40373251 is 15237304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40373251 - 2²¹ = 38276099 is a prime.

It is not a weakly prime, because it can be changed into another prime (40373231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20186625 + 20186626.

It is an arithmetic number, because the mean of its divisors is an integer number (20186626).

Almost surely, 2^40373251 is an apocalyptic number.

40373251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40373251 is an equidigital number, since it uses as much as digits as its factorization.

40373251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 40373251 is about 6353.9948851097. The cubic root of 40373251 is about 343.0556480529.

The spelling of 40373251 in words is "forty million, three hundred seventy-three thousand, two hundred fifty-one".