61450369 has 4 divisors (see below), whose sum is σ = 61514244. Its totient is φ = 61386496.

The previous prime is 61450343. The next prime is 61450399. The reversal of 61450369 is 96305416.

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 50481025 + 10969344 = 7105^2 + 3312^2 .

It is a cyclic number.

It is not a de Polignac number, because 61450369 - 2²⁵ = 27895937 is a prime.

It is a super-2 number, since 2×61450369² = 7552295700472322, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61450399) 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 in 3 ways as a sum of consecutive naturals, for example, 30472 + ... + 32425.

It is an arithmetic number, because the mean of its divisors is an integer number (15378561).

Almost surely, 2^61450369 is an apocalyptic number.

It is an amenable number.

61450369 is a deficient number, since it is larger than the sum of its proper divisors (63875).

61450369 is an equidigital number, since it uses as much as digits as its factorization.

61450369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63874.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 61450369 is about 7839.0285750213. The cubic root of 61450369 is about 394.6161286937.

The spelling of 61450369 in words is "sixty-one million, four hundred fifty thousand, three hundred sixty-nine".