40051255 has 4 divisors (see below), whose sum is σ = 48061512. Its totient is φ = 32041000.

The previous prime is 40051229. The next prime is 40051267. The reversal of 40051255 is 55215004.

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

It is not a de Polignac number, because 40051255 - 2⁵ = 40051223 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 4005121 + ... + 4005130.

It is an arithmetic number, because the mean of its divisors is an integer number (12015378).

Almost surely, 2^40051255 is an apocalyptic number.

40051255 is a deficient number, since it is larger than the sum of its proper divisors (8010257).

40051255 is an equidigital number, since it uses as much as digits as its factorization.

40051255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8010256.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 40051255 is about 6328.6060866513. The cubic root of 40051255 is about 342.1412016828.

Adding to 40051255 its reverse (55215004), we get a palindrome (95266259).

It can be divided in two parts, 4005125 and 5, that multiplied together give a square (20025625 = 4475²).

The spelling of 40051255 in words is "forty million, fifty-one thousand, two hundred fifty-five".