61330045 has 16 divisors (see below), whose sum is σ = 84273408. Its totient is φ = 41973120.

The previous prime is 61330021. The next prime is 61330051. The reversal of 61330045 is 54003316.

It is not a de Polignac number, because 61330045 - 2²⁵ = 27775613 is a prime.

It is a super-2 number, since 2×61330045² = 7522748839404050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61329998 and 61330025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20697 + ... + 23473.

It is an arithmetic number, because the mean of its divisors is an integer number (5267088).

Almost surely, 2^61330045 is an apocalyptic number.

It is an amenable number.

61330045 is a deficient number, since it is larger than the sum of its proper divisors (22943363).

61330045 is a wasteful number, since it uses less digits than its factorization.

61330045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 61330045 is about 7831.3501390246. The cubic root of 61330045 is about 394.3583986673.

The spelling of 61330045 in words is "sixty-one million, three hundred thirty thousand, forty-five".