61362221 has 4 divisors (see below), whose sum is σ = 61606944. Its totient is φ = 61117500.

The previous prime is 61362211. The next prime is 61362233. The reversal of 61362221 is 12226316.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61362221 - 2¹⁸ = 61100077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61362211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121985 + ... + 122486.

It is an arithmetic number, because the mean of its divisors is an integer number (15401736).

Almost surely, 2^61362221 is an apocalyptic number.

It is an amenable number.

61362221 is a deficient number, since it is larger than the sum of its proper divisors (244723).

61362221 is a wasteful number, since it uses less digits than its factorization.

61362221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244722.

The product of its digits is 864, while the sum is 23.

The square root of 61362221 is about 7833.4041769846. The cubic root of 61362221 is about 394.4273515895.

Adding to 61362221 its reverse (12226316), we get a palindrome (73588537).

The spelling of 61362221 in words is "sixty-one million, three hundred sixty-two thousand, two hundred twenty-one".