61885133 has 4 divisors (see below), whose sum is σ = 62231040. Its totient is φ = 61539228.

The previous prime is 61885129. The next prime is 61885139. The reversal of 61885133 is 33158816.

61885133 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 not a de Polignac number, because 61885133 - 2² = 61885129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61885093 and 61885102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61885139) 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, 172685 + ... + 173042.

It is an arithmetic number, because the mean of its divisors is an integer number (15557760).

Almost surely, 2^61885133 is an apocalyptic number.

It is an amenable number.

61885133 is a deficient number, since it is larger than the sum of its proper divisors (345907).

61885133 is a wasteful number, since it uses less digits than its factorization.

61885133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345906.

The product of its digits is 17280, while the sum is 35.

The square root of 61885133 is about 7866.7104306692. The cubic root of 61885133 is about 395.5445845224.

The spelling of 61885133 in words is "sixty-one million, eight hundred eighty-five thousand, one hundred thirty-three".