61304543 has 4 divisors (see below), whose sum is σ = 61867080. Its totient is φ = 60742008.

The previous prime is 61304539. The next prime is 61304563. The reversal of 61304543 is 34540316.

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 61304543 - 2² = 61304539 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61304563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281105 + ... + 281322.

It is an arithmetic number, because the mean of its divisors is an integer number (15466770).

Almost surely, 2^61304543 is an apocalyptic number.

61304543 is a deficient number, since it is larger than the sum of its proper divisors (562537).

61304543 is a wasteful number, since it uses less digits than its factorization.

61304543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562536.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 61304543 is about 7829.7217702802. The cubic root of 61304543 is about 394.3037309420.

Adding to 61304543 its reverse (34540316), we get a palindrome (95844859).

The spelling of 61304543 in words is "sixty-one million, three hundred four thousand, five hundred forty-three".