42611533 has 2 divisors, whose sum is σ = 42611534. Its totient is φ = 42611532.

The previous prime is 42611473. The next prime is 42611539. The reversal of 42611533 is 33511624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25989604 + 16621929 = 5098^2 + 4077^2 .

It is a cyclic number.

It is not a de Polignac number, because 42611533 - 2⁹ = 42611021 is a prime.

It is a super-2 number, since 2×42611533² = 3631485489220178, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42611498 and 42611507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42611539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21305766 + 21305767.

It is an arithmetic number, because the mean of its divisors is an integer number (21305767).

Almost surely, 2^42611533 is an apocalyptic number.

It is an amenable number.

42611533 is a deficient number, since it is larger than the sum of its proper divisors (1).

42611533 is an equidigital number, since it uses as much as digits as its factorization.

42611533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 25.

The square root of 42611533 is about 6527.7509909616. The cubic root of 42611533 is about 349.2816094736.

Subtracting from 42611533 its reverse (33511624), we obtain a palindrome (9099909).

The spelling of 42611533 in words is "forty-two million, six hundred eleven thousand, five hundred thirty-three".