61224213 has 8 divisors (see below), whose sum is σ = 85928800. Its totient is φ = 38667888.

The previous prime is 61224211. The next prime is 61224227. The reversal of 61224213 is 31242216.

61224213 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 61224213 - 2¹ = 61224211 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 61224213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61224211) 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, 536998 + ... + 537111.

It is an arithmetic number, because the mean of its divisors is an integer number (10741100).

Almost surely, 2^61224213 is an apocalyptic number.

It is an amenable number.

61224213 is a deficient number, since it is larger than the sum of its proper divisors (24704587).

61224213 is a wasteful number, since it uses less digits than its factorization.

61224213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074131.

The product of its digits is 576, while the sum is 21.

The square root of 61224213 is about 7824.5902768132. The cubic root of 61224213 is about 394.1314312394.

Adding to 61224213 its reverse (31242216), we get a palindrome (92466429).

The spelling of 61224213 in words is "sixty-one million, two hundred twenty-four thousand, two hundred thirteen".