61443213 has 8 divisors (see below), whose sum is σ = 88226208. Its totient is φ = 37811184.

The previous prime is 61443211. The next prime is 61443233. The reversal of 61443213 is 31234416.

61443213 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 not a de Polignac number, because 61443213 - 2¹ = 61443211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61443211) 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, 787695 + ... + 787772.

It is an arithmetic number, because the mean of its divisors is an integer number (11028276).

Almost surely, 2^61443213 is an apocalyptic number.

It is an amenable number.

61443213 is a deficient number, since it is larger than the sum of its proper divisors (26782995).

61443213 is a wasteful number, since it uses less digits than its factorization.

61443213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575483.

The product of its digits is 1728, while the sum is 24.

The square root of 61443213 is about 7838.5721276263. The cubic root of 61443213 is about 394.6008101926.

Adding to 61443213 its reverse (31234416), we get a palindrome (92677629).

The spelling of 61443213 in words is "sixty-one million, four hundred forty-three thousand, two hundred thirteen".