61222533 has 4 divisors (see below), whose sum is σ = 81630048. Its totient is φ = 40815020.

The previous prime is 61222507. The next prime is 61222537. The reversal of 61222533 is 33522216.

61222533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-61222533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61222537) 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 in 3 ways as a sum of consecutive naturals, for example, 10203753 + ... + 10203758.

It is an arithmetic number, because the mean of its divisors is an integer number (20407512).

Almost surely, 2^61222533 is an apocalyptic number.

It is an amenable number.

61222533 is a deficient number, since it is larger than the sum of its proper divisors (20407515).

61222533 is a wasteful number, since it uses less digits than its factorization.

61222533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20407514.

The product of its digits is 2160, while the sum is 24.

The square root of 61222533 is about 7824.4829222128. The cubic root of 61222533 is about 394.1278262013.

Adding to 61222533 its reverse (33522216), we get a palindrome (94744749).

The spelling of 61222533 in words is "sixty-one million, two hundred twenty-two thousand, five hundred thirty-three".