40221255 has 8 divisors (see below), whose sum is σ = 64354032. Its totient is φ = 21451328.

The previous prime is 40221253. The next prime is 40221263. The reversal of 40221255 is 55212204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40221255 - 2¹ = 40221253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40221253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340694 + ... + 1340723.

It is an arithmetic number, because the mean of its divisors is an integer number (8044254).

Almost surely, 2^40221255 is an apocalyptic number.

40221255 is a deficient number, since it is larger than the sum of its proper divisors (24132777).

40221255 is a wasteful number, since it uses less digits than its factorization.

40221255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681425.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 40221255 is about 6342.0229422480. The cubic root of 40221255 is about 342.6245981393.

Adding to 40221255 its reverse (55212204), we get a palindrome (95433459).

The spelling of 40221255 in words is "forty million, two hundred twenty-one thousand, two hundred fifty-five".