61163045 has 4 divisors (see below), whose sum is σ = 73395660. Its totient is φ = 48930432.

The previous prime is 61163041. The next prime is 61163083. The reversal of 61163045 is 54036116.

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 48080356 + 13082689 = 6934^2 + 3617^2 .

It is a cyclic number.

It is not a de Polignac number, because 61163045 - 2² = 61163041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61163041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6116300 + ... + 6116309.

It is an arithmetic number, because the mean of its divisors is an integer number (18348915).

Almost surely, 2^61163045 is an apocalyptic number.

It is an amenable number.

61163045 is a deficient number, since it is larger than the sum of its proper divisors (12232615).

61163045 is a wasteful number, since it uses less digits than its factorization.

61163045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12232614.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 61163045 is about 7820.6805969813. The cubic root of 61163045 is about 394.0001309833. Note that the first 3 decimals are identical.

The spelling of 61163045 in words is "sixty-one million, one hundred sixty-three thousand, forty-five".