61022201 has 2 divisors, whose sum is σ = 61022202. Its totient is φ = 61022200.

The previous prime is 61022179. The next prime is 61022209. The reversal of 61022201 is 10222016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45427600 + 15594601 = 6740^2 + 3949^2 .

It is a cyclic number.

It is not a de Polignac number, because 61022201 - 2¹⁴ = 61005817 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (61022209) 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, 30511100 + 30511101.

It is an arithmetic number, because the mean of its divisors is an integer number (30511101).

Almost surely, 2^61022201 is an apocalyptic number.

It is an amenable number.

61022201 is a deficient number, since it is larger than the sum of its proper divisors (1).

61022201 is an equidigital number, since it uses as much as digits as its factorization.

61022201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 61022201 is about 7811.6708199975. The cubic root of 61022201 is about 393.6974688969.

Adding to 61022201 its reverse (10222016), we get a palindrome (71244217).

The spelling of 61022201 in words is "sixty-one million, twenty-two thousand, two hundred one".