40531259 has 2 divisors, whose sum is σ = 40531260. Its totient is φ = 40531258.

The previous prime is 40531217. The next prime is 40531319. The reversal of 40531259 is 95213504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40531259 - 2⁸ = 40531003 is a prime.

It is a super-2 number, since 2×40531259² = 3285565912250162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40536259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20265629 + 20265630.

It is an arithmetic number, because the mean of its divisors is an integer number (20265630).

Almost surely, 2^40531259 is an apocalyptic number.

40531259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40531259 is an equidigital number, since it uses as much as digits as its factorization.

40531259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 40531259 is about 6366.4164959575. The cubic root of 40531259 is about 343.5026021992.

The spelling of 40531259 in words is "forty million, five hundred thirty-one thousand, two hundred fifty-nine".