40372051 has 2 divisors, whose sum is σ = 40372052. Its totient is φ = 40372050.

The previous prime is 40372039. The next prime is 40372067. The reversal of 40372051 is 15027304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40372051 - 2⁵ = 40372019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40372151) 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, 20186025 + 20186026.

It is an arithmetic number, because the mean of its divisors is an integer number (20186026).

Almost surely, 2^40372051 is an apocalyptic number.

40372051 is a deficient number, since it is larger than the sum of its proper divisors (1).

40372051 is an equidigital number, since it uses as much as digits as its factorization.

40372051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 40372051 is about 6353.9004556257. The cubic root of 40372051 is about 343.0522491782.

Adding to 40372051 its reverse (15027304), we get a palindrome (55399355).

The spelling of 40372051 in words is "forty million, three hundred seventy-two thousand, fifty-one".