42545593 has 2 divisors, whose sum is σ = 42545594. Its totient is φ = 42545592.

The previous prime is 42545557. The next prime is 42545599. The reversal of 42545593 is 39554524.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39476089 + 3069504 = 6283^2 + 1752^2 .

It is a cyclic number.

It is not a de Polignac number, because 42545593 - 2¹⁷ = 42414521 is a prime.

It is not a weakly prime, because it can be changed into another prime (42545599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21272796 + 21272797.

It is an arithmetic number, because the mean of its divisors is an integer number (21272797).

Almost surely, 2^42545593 is an apocalyptic number.

It is an amenable number.

42545593 is a deficient number, since it is larger than the sum of its proper divisors (1).

42545593 is an equidigital number, since it uses as much as digits as its factorization.

42545593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108000, while the sum is 37.

The square root of 42545593 is about 6522.6982913515. The cubic root of 42545593 is about 349.1013490436.

The spelling of 42545593 in words is "forty-two million, five hundred forty-five thousand, five hundred ninety-three".