61982543 has 8 divisors (see below), whose sum is σ = 71273088. Its totient is φ = 52800984.

The previous prime is 61982521. The next prime is 61982581. The reversal of 61982543 is 34528916.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61982543 - 2¹⁴ = 61966159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61982497 and 61982506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61982513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26021 + ... + 28302.

It is an arithmetic number, because the mean of its divisors is an integer number (8909136).

Almost surely, 2^61982543 is an apocalyptic number.

61982543 is a deficient number, since it is larger than the sum of its proper divisors (9290545).

61982543 is a wasteful number, since it uses less digits than its factorization.

61982543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54493.

The product of its digits is 51840, while the sum is 38.

The square root of 61982543 is about 7872.8992753623. The cubic root of 61982543 is about 395.7520107532.

The spelling of 61982543 in words is "sixty-one million, nine hundred eighty-two thousand, five hundred forty-three".