42541553 has 4 divisors (see below), whose sum is σ = 43124388. Its totient is φ = 41958720.

The previous prime is 42541547. The next prime is 42541619. The reversal of 42541553 is 35514524.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26915344 + 15626209 = 5188^2 + 3953^2 .

It is a cyclic number.

It is not a de Polignac number, because 42541553 - 2¹⁰ = 42540529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42841553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291308 + ... + 291453.

It is an arithmetic number, because the mean of its divisors is an integer number (10781097).

Almost surely, 2^42541553 is an apocalyptic number.

It is an amenable number.

42541553 is a deficient number, since it is larger than the sum of its proper divisors (582835).

42541553 is an equidigital number, since it uses as much as digits as its factorization.

42541553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582834.

The product of its digits is 12000, while the sum is 29.

The square root of 42541553 is about 6522.3885962123. The cubic root of 42541553 is about 349.0902988266.

The spelling of 42541553 in words is "forty-two million, five hundred forty-one thousand, five hundred fifty-three".