61443573 has 8 divisors (see below), whose sum is σ = 82690848. Its totient is φ = 40579344.

The previous prime is 61443563. The next prime is 61443601. The reversal of 61443573 is 37534416.

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

It is not a de Polignac number, because 61443573 - 2⁶ = 61443509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61443563) 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, 95386 + ... + 96027.

It is an arithmetic number, because the mean of its divisors is an integer number (10336356).

Almost surely, 2^61443573 is an apocalyptic number.

It is an amenable number.

61443573 is a deficient number, since it is larger than the sum of its proper divisors (21247275).

61443573 is a wasteful number, since it uses less digits than its factorization.

61443573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191523.

The product of its digits is 30240, while the sum is 33.

The square root of 61443573 is about 7838.5950909586. The cubic root of 61443573 is about 394.6015808555.

Adding to 61443573 its reverse (37534416), we get a palindrome (98977989).

The spelling of 61443573 in words is "sixty-one million, four hundred forty-three thousand, five hundred seventy-three".