42555515 has 8 divisors (see below), whose sum is σ = 51111888. Its totient is φ = 34014240.

The previous prime is 42555493. The next prime is 42555517. The reversal of 42555515 is 51555524.

42555515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42555515 - 2¹⁴ = 42539131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42555517) 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 7 ways as a sum of consecutive naturals, for example, 3824 + ... + 9986.

It is an arithmetic number, because the mean of its divisors is an integer number (6388986).

Almost surely, 2^42555515 is an apocalyptic number.

42555515 is a deficient number, since it is larger than the sum of its proper divisors (8556373).

42555515 is a wasteful number, since it uses less digits than its factorization.

42555515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7549.

The product of its digits is 25000, while the sum is 32.

The square root of 42555515 is about 6523.4588218214. The cubic root of 42555515 is about 349.1284847515.

Subtracting 42555515 from its reverse (51555524), we obtain a palindrome (9000009).

The spelling of 42555515 in words is "forty-two million, five hundred fifty-five thousand, five hundred fifteen".