61163133 has 4 divisors (see below), whose sum is σ = 81550848. Its totient is φ = 40775420.

The previous prime is 61163111. The next prime is 61163153. The reversal of 61163133 is 33136116.

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 61163133 - 2¹⁰ = 61162109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61163153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10193853 + ... + 10193858.

It is an arithmetic number, because the mean of its divisors is an integer number (20387712).

Almost surely, 2^61163133 is an apocalyptic number.

It is an amenable number.

61163133 is a deficient number, since it is larger than the sum of its proper divisors (20387715).

61163133 is a wasteful number, since it uses less digits than its factorization.

61163133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20387714.

The product of its digits is 972, while the sum is 24.

The square root of 61163133 is about 7820.6862230881. The cubic root of 61163133 is about 394.0003199427. Note that the first 3 decimals are identical.

Adding to 61163133 its reverse (33136116), we get a palindrome (94299249).

The spelling of 61163133 in words is "sixty-one million, one hundred sixty-three thousand, one hundred thirty-three".