61547543 has 2 divisors, whose sum is σ = 61547544. Its totient is φ = 61547542.

The previous prime is 61547533. The next prime is 61547639. The reversal of 61547543 is 34574516.

61547543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61547543 - 2¹⁶ = 61482007 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61547503) 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 as a sum of consecutive naturals, namely, 30773771 + 30773772.

It is an arithmetic number, because the mean of its divisors is an integer number (30773772).

Almost surely, 2^61547543 is an apocalyptic number.

61547543 is a deficient number, since it is larger than the sum of its proper divisors (1).

61547543 is an equidigital number, since it uses as much as digits as its factorization.

61547543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 35.

The square root of 61547543 is about 7845.2242160438. The cubic root of 61547543 is about 394.8240267266.

The spelling of 61547543 in words is "sixty-one million, five hundred forty-seven thousand, five hundred forty-three".