61450399 has 2 divisors, whose sum is σ = 61450400. Its totient is φ = 61450398.

The previous prime is 61450343. The next prime is 61450409. The reversal of 61450399 is 99305416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61450399 - 2¹¹ = 61448351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61450099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30725199 + 30725200.

It is an arithmetic number, because the mean of its divisors is an integer number (30725200).

Almost surely, 2^61450399 is an apocalyptic number.

61450399 is a deficient number, since it is larger than the sum of its proper divisors (1).

61450399 is an equidigital number, since it uses as much as digits as its factorization.

61450399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 61450399 is about 7839.0304885234. The cubic root of 61450399 is about 394.6161929107.

The spelling of 61450399 in words is "sixty-one million, four hundred fifty thousand, three hundred ninety-nine".