61493223 has 16 divisors (see below), whose sum is σ = 91863936. Its totient is φ = 36260640.

The previous prime is 61493111. The next prime is 61493227. The reversal of 61493223 is 32239416.

It is not a de Polignac number, because 61493223 - 2¹⁰ = 61492199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61493227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23961 + ... + 26402.

It is an arithmetic number, because the mean of its divisors is an integer number (5741496).

Almost surely, 2^61493223 is an apocalyptic number.

61493223 is a deficient number, since it is larger than the sum of its proper divisors (30370713).

61493223 is a wasteful number, since it uses less digits than its factorization.

61493223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50414.

The product of its digits is 7776, while the sum is 30.

The square root of 61493223 is about 7841.7614730365. The cubic root of 61493223 is about 394.7078392904.

It can be divided in two parts, 61493 and 223, that added together give a palindrome (61716).

The spelling of 61493223 in words is "sixty-one million, four hundred ninety-three thousand, two hundred twenty-three".