40221553 has 8 divisors (see below), whose sum is σ = 41392640. Its totient is φ = 39054960.

The previous prime is 40221529. The next prime is 40221557. The reversal of 40221553 is 35512204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40221553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40221557) 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, 26608 + ... + 28078.

It is an arithmetic number, because the mean of its divisors is an integer number (5174080).

Almost surely, 2^40221553 is an apocalyptic number.

It is an amenable number.

40221553 is a deficient number, since it is larger than the sum of its proper divisors (1171087).

40221553 is a wasteful number, since it uses less digits than its factorization.

40221553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 40221553 is about 6342.0464362854. The cubic root of 40221553 is about 342.6254443078.

Adding to 40221553 its reverse (35512204), we get a palindrome (75733757).

The spelling of 40221553 in words is "forty million, two hundred twenty-one thousand, five hundred fifty-three".