61163533 has 2 divisors, whose sum is σ = 61163534. Its totient is φ = 61163532.

The previous prime is 61163521. The next prime is 61163549. The reversal of 61163533 is 33536116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58644964 + 2518569 = 7658^2 + 1587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61163533 is a prime.

It is equal to p_3627082 and since 61163533 and 3627082 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61163573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30581766 + 30581767.

It is an arithmetic number, because the mean of its divisors is an integer number (30581767).

Almost surely, 2^61163533 is an apocalyptic number.

It is an amenable number.

61163533 is a deficient number, since it is larger than the sum of its proper divisors (1).

61163533 is an equidigital number, since it uses as much as digits as its factorization.

61163533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 28.

The square root of 61163533 is about 7820.7117962498. The cubic root of 61163533 is about 394.0011788467.

Adding to 61163533 its reverse (33536116), we get a palindrome (94699649).

The spelling of 61163533 in words is "sixty-one million, one hundred sixty-three thousand, five hundred thirty-three".