40642553 has 8 divisors (see below), whose sum is σ = 46567680. Its totient is φ = 34747200.

The previous prime is 40642549. The next prime is 40642571. The reversal of 40642553 is 35524604.

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 40642553 - 2² = 40642549 is a prime.

It is a super-2 number, since 2×40642553² = 3303634228715618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40042553) 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, 4433 + ... + 10046.

It is an arithmetic number, because the mean of its divisors is an integer number (5820960).

Almost surely, 2^40642553 is an apocalyptic number.

It is an amenable number.

40642553 is a deficient number, since it is larger than the sum of its proper divisors (5925127).

40642553 is a wasteful number, since it uses less digits than its factorization.

40642553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14887.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 40642553 is about 6375.1512138929. The cubic root of 40642553 is about 343.8167205806.

The spelling of 40642553 in words is "forty million, six hundred forty-two thousand, five hundred fifty-three".