61617443 has 4 divisors (see below), whose sum is σ = 61690200. Its totient is φ = 61544688.

The previous prime is 61617427. The next prime is 61617467. The reversal of 61617443 is 34471616.

61617443 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.

It is a cyclic number.

It is not a de Polignac number, because 61617443 - 2⁴ = 61617427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61617043) 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, 35093 + ... + 36806.

It is an arithmetic number, because the mean of its divisors is an integer number (15422550).

Almost surely, 2^61617443 is an apocalyptic number.

61617443 is a deficient number, since it is larger than the sum of its proper divisors (72757).

61617443 is an equidigital number, since it uses as much as digits as its factorization.

61617443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72756.

The product of its digits is 12096, while the sum is 32.

The square root of 61617443 is about 7849.6778914806. The cubic root of 61617443 is about 394.9734383677.

The spelling of 61617443 in words is "sixty-one million, six hundred seventeen thousand, four hundred forty-three".