42551015 has 16 divisors (see below), whose sum is σ = 55284768. Its totient is φ = 31253376.

The previous prime is 42550993. The next prime is 42551021. The reversal of 42551015 is 51015524.

It is a happy number.

42551015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42551015 - 2¹⁶ = 42485479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11144 + ... + 14466.

It is an arithmetic number, because the mean of its divisors is an integer number (3455298).

Almost surely, 2^42551015 is an apocalyptic number.

42551015 is a deficient number, since it is larger than the sum of its proper divisors (12733753).

42551015 is a wasteful number, since it uses less digits than its factorization.

42551015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 42551015 is about 6523.1139036506. The cubic root of 42551015 is about 349.1161782106.

Adding to 42551015 its reverse (51015524), we get a palindrome (93566539).

The spelling of 42551015 in words is "forty-two million, five hundred fifty-one thousand, fifteen".