61453443 has 4 divisors (see below), whose sum is σ = 81937928. Its totient is φ = 40968960.

The previous prime is 61453433. The next prime is 61453451. The reversal of 61453443 is 34435416.

61453443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61453443 - 2¹⁴ = 61437059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61453443.

It is not an unprimeable number, because it can be changed into a prime (61453423) 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 3 ways as a sum of consecutive naturals, for example, 10242238 + ... + 10242243.

It is an arithmetic number, because the mean of its divisors is an integer number (20484482).

Almost surely, 2^61453443 is an apocalyptic number.

61453443 is a deficient number, since it is larger than the sum of its proper divisors (20484485).

61453443 is a wasteful number, since it uses less digits than its factorization.

61453443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20484484.

The product of its digits is 17280, while the sum is 30.

The square root of 61453443 is about 7839.2246427820. The cubic root of 61453443 is about 394.6227086908.

Adding to 61453443 its reverse (34435416), we get a palindrome (95888859).

The spelling of 61453443 in words is "sixty-one million, four hundred fifty-three thousand, four hundred forty-three".