61045505 has 4 divisors (see below), whose sum is σ = 73254612. Its totient is φ = 48836400.

The previous prime is 61045489. The next prime is 61045507. The reversal of 61045505 is 50554016.

61045505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 31091776 + 29953729 = 5576^2 + 5473^2 .

It is not a de Polignac number, because 61045505 - 2⁴ = 61045489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61045507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6104546 + ... + 6104555.

It is an arithmetic number, because the mean of its divisors is an integer number (18313653).

Almost surely, 2^61045505 is an apocalyptic number.

It is an amenable number.

61045505 is a deficient number, since it is larger than the sum of its proper divisors (12209107).

61045505 is a wasteful number, since it uses less digits than its factorization.

61045505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12209106.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 61045505 is about 7813.1622919276. The cubic root of 61045505 is about 393.7475793922.

The spelling of 61045505 in words is "sixty-one million, forty-five thousand, five hundred five".