42452551 has 2 divisors, whose sum is σ = 42452552. Its totient is φ = 42452550.

The previous prime is 42452537. The next prime is 42452563. The reversal of 42452551 is 15525424.

42452551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42452551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42452581) 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 as a sum of consecutive naturals, namely, 21226275 + 21226276.

It is an arithmetic number, because the mean of its divisors is an integer number (21226276).

Almost surely, 2^42452551 is an apocalyptic number.

42452551 is a deficient number, since it is larger than the sum of its proper divisors (1).

42452551 is an equidigital number, since it uses as much as digits as its factorization.

42452551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8000, while the sum is 28.

The square root of 42452551 is about 6515.5622167239. The cubic root of 42452551 is about 348.8466826835.

Adding to 42452551 its reverse (15525424), we get a palindrome (57977975).

It can be divided in two parts, 424 and 52551, that added together give a triangular number (52975 = T₃₂₅).

The spelling of 42452551 in words is "forty-two million, four hundred fifty-two thousand, five hundred fifty-one".