61210223 has 4 divisors (see below), whose sum is σ = 61232208. Its totient is φ = 61188240.

The previous prime is 61210207. The next prime is 61210231. The reversal of 61210223 is 32201216.

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

It is a cyclic number.

It is not a de Polignac number, because 61210223 - 2⁴ = 61210207 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 (61210423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6086 + ... + 12627.

It is an arithmetic number, because the mean of its divisors is an integer number (15308052).

Almost surely, 2^61210223 is an apocalyptic number.

61210223 is a deficient number, since it is larger than the sum of its proper divisors (21985).

61210223 is a wasteful number, since it uses less digits than its factorization.

61210223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21984.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 61210223 is about 7823.6962492162. The cubic root of 61210223 is about 394.1014087016.

Adding to 61210223 its reverse (32201216), we get a palindrome (93411439).

The spelling of 61210223 in words is "sixty-one million, two hundred ten thousand, two hundred twenty-three".