61448449 has 2 divisors, whose sum is σ = 61448450. Its totient is φ = 61448448.

The previous prime is 61448377. The next prime is 61448459. The reversal of 61448449 is 94484416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32126224 + 29322225 = 5668^2 + 5415^2 .

It is a cyclic number.

It is not a de Polignac number, because 61448449 - 2⁹ = 61447937 is a prime.

It is not a weakly prime, because it can be changed into another prime (61448459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30724224 + 30724225.

It is an arithmetic number, because the mean of its divisors is an integer number (30724225).

Almost surely, 2^61448449 is an apocalyptic number.

It is an amenable number.

61448449 is a deficient number, since it is larger than the sum of its proper divisors (1).

61448449 is an equidigital number, since it uses as much as digits as its factorization.

61448449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 40.

The square root of 61448449 is about 7838.9061099110. The cubic root of 61448449 is about 394.6120187598.

The spelling of 61448449 in words is "sixty-one million, four hundred forty-eight thousand, four hundred forty-nine".