61140233 has 48 divisors (see below), whose sum is σ = 84940800. Its totient is φ = 42625440.

The previous prime is 61140229. The next prime is 61140251. The reversal of 61140233 is 33204116.

61140233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61140233 - 2² = 61140229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61140253) 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 47 ways as a sum of consecutive naturals, for example, 773888 + ... + 773966.

It is an arithmetic number, because the mean of its divisors is an integer number (1769600).

Almost surely, 2^61140233 is an apocalyptic number.

It is an amenable number.

61140233 is a deficient number, since it is larger than the sum of its proper divisors (23800567).

61140233 is a wasteful number, since it uses less digits than its factorization.

61140233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 61140233 is about 7819.2220201245. Note that the first 3 decimals coincide. The cubic root of 61140233 is about 393.9511414416.

Adding to 61140233 its reverse (33204116), we get a palindrome (94344349).

The spelling of 61140233 in words is "sixty-one million, one hundred forty thousand, two hundred thirty-three".