61450321 has 2 divisors, whose sum is σ = 61450322. Its totient is φ = 61450320.

The previous prime is 61450307. The next prime is 61450327. The reversal of 61450321 is 12305416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61449921 + 400 = 7839^2 + 20^2 .

It is a cyclic number.

It is not a de Polignac number, because 61450321 - 2⁹ = 61449809 is a prime.

It is a super-2 number, since 2×61450321² = 7552283902006082, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is equal to p_3643006 and since 61450321 and 3643006 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 61450292 and 61450301.

It is not a weakly prime, because it can be changed into another prime (61450327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30725160 + 30725161.

It is an arithmetic number, because the mean of its divisors is an integer number (30725161).

Almost surely, 2^61450321 is an apocalyptic number.

It is an amenable number.

61450321 is a deficient number, since it is larger than the sum of its proper divisors (1).

61450321 is an equidigital number, since it uses as much as digits as its factorization.

61450321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 61450321 is about 7839.0255134168. The cubic root of 61450321 is about 394.6160259464.

Adding to 61450321 its reverse (12305416), we get a palindrome (73755737).

The spelling of 61450321 in words is "sixty-one million, four hundred fifty thousand, three hundred twenty-one".