40392251 has 2 divisors, whose sum is σ = 40392252. Its totient is φ = 40392250.

The previous prime is 40392241. The next prime is 40392259. The reversal of 40392251 is 15229304.

40392251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40392251 - 2¹⁸ = 40130107 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40392251.

It is not a weakly prime, because it can be changed into another prime (40392259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20196125 + 20196126.

It is an arithmetic number, because the mean of its divisors is an integer number (20196126).

Almost surely, 2^40392251 is an apocalyptic number.

40392251 is a deficient number, since it is larger than the sum of its proper divisors (1).

40392251 is an equidigital number, since it uses as much as digits as its factorization.

40392251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 40392251 is about 6355.4898316338. The cubic root of 40392251 is about 343.1094545950.

The spelling of 40392251 in words is "forty million, three hundred ninety-two thousand, two hundred fifty-one".