61226321 has 4 divisors (see below), whose sum is σ = 65936052. Its totient is φ = 56516592.

The previous prime is 61226317. The next prime is 61226323. The reversal of 61226321 is 12362216.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16483600 + 44742721 = 4060^2 + 6689^2 .

It is a cyclic number.

It is not a de Polignac number, because 61226321 - 2² = 61226317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61226323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2354846 + ... + 2354871.

It is an arithmetic number, because the mean of its divisors is an integer number (16484013).

Almost surely, 2^61226321 is an apocalyptic number.

It is an amenable number.

61226321 is a deficient number, since it is larger than the sum of its proper divisors (4709731).

61226321 is a wasteful number, since it uses less digits than its factorization.

61226321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709730.

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

The square root of 61226321 is about 7824.7249791926. The cubic root of 61226321 is about 394.1359546106.

Adding to 61226321 its reverse (12362216), we get a palindrome (73588537).

The spelling of 61226321 in words is "sixty-one million, two hundred twenty-six thousand, three hundred twenty-one".