42551051 has 16 divisors (see below), whose sum is σ = 47923200. Its totient is φ = 37542528.

The previous prime is 42551039. The next prime is 42551053. The reversal of 42551051 is 15015524.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-42551051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42551053) 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 15 ways as a sum of consecutive naturals, for example, 32630 + ... + 33908.

It is an arithmetic number, because the mean of its divisors is an integer number (2995200).

Almost surely, 2^42551051 is an apocalyptic number.

42551051 is a deficient number, since it is larger than the sum of its proper divisors (5372149).

42551051 is a wasteful number, since it uses less digits than its factorization.

42551051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418.

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

The square root of 42551051 is about 6523.1166630684. The cubic root of 42551051 is about 349.1162766663.

Adding to 42551051 its reverse (15015524), we get a palindrome (57566575).

The spelling of 42551051 in words is "forty-two million, five hundred fifty-one thousand, fifty-one".