61543047 has 8 divisors (see below), whose sum is σ = 82114560. Its totient is φ = 41000120.

The previous prime is 61543021. The next prime is 61543049. The reversal of 61543047 is 74034516.

61543047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61543047 - 2⁶ = 61542983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61543049) 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 7 ways as a sum of consecutive naturals, for example, 1479 + ... + 11192.

It is an arithmetic number, because the mean of its divisors is an integer number (10264320).

Almost surely, 2^61543047 is an apocalyptic number.

61543047 is a deficient number, since it is larger than the sum of its proper divisors (20571513).

61543047 is a wasteful number, since it uses less digits than its factorization.

61543047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14293.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 61543047 is about 7844.9376670564. The cubic root of 61543047 is about 394.8144126301.

The spelling of 61543047 in words is "sixty-one million, five hundred forty-three thousand, forty-seven".