61944543 has 24 divisors (see below), whose sum is σ = 95367168. Its totient is φ = 38654352.

The previous prime is 61944517. The next prime is 61944557. The reversal of 61944543 is 34544916.

It is not a de Polignac number, because 61944543 - 2⁸ = 61944287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61944498 and 61944507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61944593) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6546 + ... + 12912.

It is an arithmetic number, because the mean of its divisors is an integer number (3973632).

Almost surely, 2^61944543 is an apocalyptic number.

61944543 is a deficient number, since it is larger than the sum of its proper divisors (33422625).

61944543 is a wasteful number, since it uses less digits than its factorization.

61944543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6443 (or 6440 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 61944543 is about 7870.4855631657. The cubic root of 61944543 is about 395.6711188871.

The spelling of 61944543 in words is "sixty-one million, nine hundred forty-four thousand, five hundred forty-three".