61601233 has 4 divisors (see below), whose sum is σ = 62468928. Its totient is φ = 60733540.

The previous prime is 61601231. The next prime is 61601279. The reversal of 61601233 is 33210616.

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 61601233 - 2¹ = 61601231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61601231) 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, 433741 + ... + 433882.

It is an arithmetic number, because the mean of its divisors is an integer number (15617232).

Almost surely, 2^61601233 is an apocalyptic number.

It is an amenable number.

61601233 is a deficient number, since it is larger than the sum of its proper divisors (867695).

61601233 is an equidigital number, since it uses as much as digits as its factorization.

61601233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867694.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 61601233 is about 7848.6452971198. The cubic root of 61601233 is about 394.9387994698.

Adding to 61601233 its reverse (33210616), we get a palindrome (94811849).

The spelling of 61601233 in words is "sixty-one million, six hundred one thousand, two hundred thirty-three".