61314221 has 2 divisors, whose sum is σ = 61314222. Its totient is φ = 61314220.

The previous prime is 61314199. The next prime is 61314271. The reversal of 61314221 is 12241316.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61011721 + 302500 = 7811^2 + 550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61314221 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 61314193 and 61314202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61314271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30657110 + 30657111.

It is an arithmetic number, because the mean of its divisors is an integer number (30657111).

Almost surely, 2^61314221 is an apocalyptic number.

It is an amenable number.

61314221 is a deficient number, since it is larger than the sum of its proper divisors (1).

61314221 is an equidigital number, since it uses as much as digits as its factorization.

61314221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 20.

The square root of 61314221 is about 7830.3397755142. The cubic root of 61314221 is about 394.3244791092.

Adding to 61314221 its reverse (12241316), we get a palindrome (73555537).

The spelling of 61314221 in words is "sixty-one million, three hundred fourteen thousand, two hundred twenty-one".