61424533 has 2 divisors, whose sum is σ = 61424534. Its totient is φ = 61424532.

The previous prime is 61424501. The next prime is 61424543. The reversal of 61424533 is 33542416.

61424533 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 can be written as a sum of positive squares in only one way, i.e., 61355889 + 68644 = 7833^2 + 262^2 .

It is a cyclic number.

It is not a de Polignac number, because 61424533 - 2⁵ = 61424501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61424543) 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, 30712266 + 30712267.

It is an arithmetic number, because the mean of its divisors is an integer number (30712267).

Almost surely, 2^61424533 is an apocalyptic number.

It is an amenable number.

61424533 is a deficient number, since it is larger than the sum of its proper divisors (1).

61424533 is an equidigital number, since it uses as much as digits as its factorization.

61424533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 28.

The square root of 61424533 is about 7837.3804935067. The cubic root of 61424533 is about 394.5608172197.

Adding to 61424533 its reverse (33542416), we get a palindrome (94966949).

The spelling of 61424533 in words is "sixty-one million, four hundred twenty-four thousand, five hundred thirty-three".