40002055 has 4 divisors (see below), whose sum is σ = 48002472. Its totient is φ = 32001640.

The previous prime is 40002043. The next prime is 40002073. The reversal of 40002055 is 55020004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40002055 - 2⁵ = 40002023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000201 + ... + 4000210.

It is an arithmetic number, because the mean of its divisors is an integer number (12000618).

Almost surely, 2^40002055 is an apocalyptic number.

40002055 is a deficient number, since it is larger than the sum of its proper divisors (8000417).

40002055 is an equidigital number, since it uses as much as digits as its factorization.

40002055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000416.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 40002055 is about 6324.7177802650. The cubic root of 40002055 is about 342.0010459027.

Adding to 40002055 its reverse (55020004), we get a palindrome (95022059).

The spelling of 40002055 in words is "forty million, two thousand, fifty-five".