61333321 has 4 divisors (see below), whose sum is σ = 70095232. Its totient is φ = 52571412.

The previous prime is 61333303. The next prime is 61333343. The reversal of 61333321 is 12333316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61333321 - 2²³ = 52944713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61333292 and 61333301.

It is not an unprimeable number, because it can be changed into a prime (61333621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4380945 + ... + 4380958.

It is an arithmetic number, because the mean of its divisors is an integer number (17523808).

Almost surely, 2^61333321 is an apocalyptic number.

It is an amenable number.

61333321 is a deficient number, since it is larger than the sum of its proper divisors (8761911).

61333321 is an equidigital number, since it uses as much as digits as its factorization.

61333321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761910.

The product of its digits is 972, while the sum is 22.

The square root of 61333321 is about 7831.5592955682. The cubic root of 61333321 is about 394.3654202128.

Adding to 61333321 its reverse (12333316), we get a palindrome (73666637).

The spelling of 61333321 in words is "sixty-one million, three hundred thirty-three thousand, three hundred twenty-one".