61042213 has 4 divisors (see below), whose sum is σ = 61262860. Its totient is φ = 60821568.

The previous prime is 61042183. The next prime is 61042259. The reversal of 61042213 is 31224016.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14010049 + 47032164 = 3743^2 + 6858^2 .

It is a cyclic number.

It is not a de Polignac number, because 61042213 - 2⁵ = 61042181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61042283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109908 + ... + 110461.

It is an arithmetic number, because the mean of its divisors is an integer number (15315715).

Almost surely, 2^61042213 is an apocalyptic number.

It is an amenable number.

61042213 is a deficient number, since it is larger than the sum of its proper divisors (220647).

61042213 is a wasteful number, since it uses less digits than its factorization.

61042213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220646.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 61042213 is about 7812.9516189466. The cubic root of 61042213 is about 393.7405013918.

Adding to 61042213 its reverse (31224016), we get a palindrome (92266229).

The spelling of 61042213 in words is "sixty-one million, forty-two thousand, two hundred thirteen".