61424449 has 2 divisors, whose sum is σ = 61424450. Its totient is φ = 61424448.

The previous prime is 61424411. The next prime is 61424453. The reversal of 61424449 is 94442416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48233025 + 13191424 = 6945^2 + 3632^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61424449 is a prime.

It is not a weakly prime, because it can be changed into another prime (61424149) 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 as a sum of consecutive naturals, namely, 30712224 + 30712225.

It is an arithmetic number, because the mean of its divisors is an integer number (30712225).

Almost surely, 2^61424449 is an apocalyptic number.

It is an amenable number.

61424449 is a deficient number, since it is larger than the sum of its proper divisors (1).

61424449 is an equidigital number, since it uses as much as digits as its factorization.

61424449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 34.

The square root of 61424449 is about 7837.3751345715. The cubic root of 61424449 is about 394.5606373615.

The spelling of 61424449 in words is "sixty-one million, four hundred twenty-four thousand, four hundred forty-nine".