42061553 has 4 divisors (see below), whose sum is σ = 44535780. Its totient is φ = 39587328.

The previous prime is 42061529. The next prime is 42061559. The reversal of 42061553 is 35516024.

42061553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 38850289 + 3211264 = 6233^2 + 1792^2 .

It is a cyclic number.

It is not a de Polignac number, because 42061553 - 2⁸ = 42061297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42061559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1237088 + ... + 1237121.

It is an arithmetic number, because the mean of its divisors is an integer number (11133945).

Almost surely, 2^42061553 is an apocalyptic number.

It is an amenable number.

42061553 is a deficient number, since it is larger than the sum of its proper divisors (2474227).

42061553 is a wasteful number, since it uses less digits than its factorization.

42061553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2474226.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 42061553 is about 6485.4878767908. The cubic root of 42061553 is about 347.7723910206.

Adding to 42061553 its reverse (35516024), we get a palindrome (77577577).

The spelling of 42061553 in words is "forty-two million, sixty-one thousand, five hundred fifty-three".