61330533 has 16 divisors (see below), whose sum is σ = 90096192. Its totient is φ = 36800000.

The previous prime is 61330519. The next prime is 61330567. The reversal of 61330533 is 33503316.

It is a cyclic number.

It is not a de Polignac number, because 61330533 - 2⁹ = 61330021 is a prime.

It is a super-2 number, since 2×61330533² = 7522868556128178, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61330333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5868 + ... + 12533.

It is an arithmetic number, because the mean of its divisors is an integer number (5631012).

Almost surely, 2^61330533 is an apocalyptic number.

It is an amenable number.

61330533 is a deficient number, since it is larger than the sum of its proper divisors (28765659).

61330533 is a wasteful number, since it uses less digits than its factorization.

61330533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18516.

The product of its (nonzero) digits is 2430, while the sum is 24.

The square root of 61330533 is about 7831.3812957868. The cubic root of 61330533 is about 394.3594446276.

Adding to 61330533 its reverse (33503316), we get a palindrome (94833849).

The spelling of 61330533 in words is "sixty-one million, three hundred thirty thousand, five hundred thirty-three".