40641553 has 8 divisors (see below), whose sum is σ = 41034240. Its totient is φ = 40251120.

The previous prime is 40641547. The next prime is 40641563. The reversal of 40641553 is 35514604.

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 40641553 - 2⁵ = 40641521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40641533) 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, 74026 + ... + 74572.

It is an arithmetic number, because the mean of its divisors is an integer number (5129280).

Almost surely, 2^40641553 is an apocalyptic number.

It is an amenable number.

40641553 is a deficient number, since it is larger than the sum of its proper divisors (392687).

40641553 is a wasteful number, since it uses less digits than its factorization.

40641553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 40641553 is about 6375.0727838982. The cubic root of 40641553 is about 343.8139007156.

The spelling of 40641553 in words is "forty million, six hundred forty-one thousand, five hundred fifty-three".