61045545 has 32 divisors (see below), whose sum is σ = 107775360. Its totient is φ = 29258240.

The previous prime is 61045531. The next prime is 61045549. The reversal of 61045545 is 54554016.

It is not a de Polignac number, because 61045545 - 2⁵ = 61045513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61045549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12607 + ... + 16763.

It is an arithmetic number, because the mean of its divisors is an integer number (3367980).

Almost surely, 2^61045545 is an apocalyptic number.

It is an amenable number.

61045545 is a deficient number, since it is larger than the sum of its proper divisors (46729815).

61045545 is a wasteful number, since it uses less digits than its factorization.

61045545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4265.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 61045545 is about 7813.1648517102. The cubic root of 61045545 is about 393.7476653931.

The spelling of 61045545 in words is "sixty-one million, forty-five thousand, five hundred forty-five".