40155259 has 2 divisors, whose sum is σ = 40155260. Its totient is φ = 40155258.

The previous prime is 40155253. The next prime is 40155289. The reversal of 40155259 is 95255104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40155259 - 2⁷ = 40155131 is a prime.

It is a super-2 number, since 2×40155259² = 3224889650714162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40155259.

It is not a weakly prime, because it can be changed into another prime (40155253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20077629 + 20077630.

It is an arithmetic number, because the mean of its divisors is an integer number (20077630).

Almost surely, 2^40155259 is an apocalyptic number.

40155259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40155259 is an equidigital number, since it uses as much as digits as its factorization.

40155259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 40155259 is about 6336.8177344784. The cubic root of 40155259 is about 342.4370999983.

The spelling of 40155259 in words is "forty million, one hundred fifty-five thousand, two hundred fifty-nine".