42559551 has 24 divisors (see below), whose sum is σ = 66615120. Its totient is φ = 26078976.

The previous prime is 42559541. The next prime is 42559567. The reversal of 42559551 is 15595524.

42559551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42559551 - 2⁵ = 42559519 is a prime.

It is a super-2 number, since 2×42559551² = 3622630762643202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42559541) 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 23 ways as a sum of consecutive naturals, for example, 3345 + ... + 9813.

It is an arithmetic number, because the mean of its divisors is an integer number (2775630).

Almost surely, 2^42559551 is an apocalyptic number.

42559551 is a deficient number, since it is larger than the sum of its proper divisors (24055569).

42559551 is a wasteful number, since it uses less digits than its factorization.

42559551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6535 (or 6532 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 42559551 is about 6523.7681595838. The cubic root of 42559551 is about 349.1395216134.

The spelling of 42559551 in words is "forty-two million, five hundred fifty-nine thousand, five hundred fifty-one".