61516223 has 2 divisors, whose sum is σ = 61516224. Its totient is φ = 61516222.

The previous prime is 61516201. The next prime is 61516249. The reversal of 61516223 is 32261516.

It is an a-pointer prime, because the next prime (61516249) can be obtained adding 61516223 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61516223 - 2⁸ = 61515967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61516192 and 61516201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61516123) 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 as a sum of consecutive naturals, namely, 30758111 + 30758112.

It is an arithmetic number, because the mean of its divisors is an integer number (30758112).

Almost surely, 2^61516223 is an apocalyptic number.

61516223 is a deficient number, since it is larger than the sum of its proper divisors (1).

61516223 is an equidigital number, since it uses as much as digits as its factorization.

61516223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 61516223 is about 7843.2278431778. The cubic root of 61516223 is about 394.7570433504.

Adding to 61516223 its reverse (32261516), we get a palindrome (93777739).

The spelling of 61516223 in words is "sixty-one million, five hundred sixteen thousand, two hundred twenty-three".