61962221 has 2 divisors, whose sum is σ = 61962222. Its totient is φ = 61962220.

The previous prime is 61962209. The next prime is 61962227. The reversal of 61962221 is 12226916.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31866025 + 30096196 = 5645^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 61962221 - 2¹⁴ = 61945837 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61962227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30981110 + 30981111.

It is an arithmetic number, because the mean of its divisors is an integer number (30981111).

Almost surely, 2^61962221 is an apocalyptic number.

It is an amenable number.

61962221 is a deficient number, since it is larger than the sum of its proper divisors (1).

61962221 is an equidigital number, since it uses as much as digits as its factorization.

61962221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 61962221 is about 7871.6085395553. The cubic root of 61962221 is about 395.7087547487.

The spelling of 61962221 in words is "sixty-one million, nine hundred sixty-two thousand, two hundred twenty-one".