42552889 has 4 divisors (see below), whose sum is σ = 44020260. Its totient is φ = 41085520.

The previous prime is 42552869. The next prime is 42552893. The reversal of 42552889 is 98825524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27405225 + 15147664 = 5235^2 + 3892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42552889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42552859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733642 + ... + 733699.

It is an arithmetic number, because the mean of its divisors is an integer number (11005065).

Almost surely, 2^42552889 is an apocalyptic number.

It is an amenable number.

42552889 is a deficient number, since it is larger than the sum of its proper divisors (1467371).

42552889 is a wasteful number, since it uses less digits than its factorization.

42552889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467370.

The product of its digits is 230400, while the sum is 43.

The square root of 42552889 is about 6523.2575451227. The cubic root of 42552889 is about 349.1213033066.

The spelling of 42552889 in words is "forty-two million, five hundred fifty-two thousand, eight hundred eighty-nine".