61143045 has 32 divisors (see below), whose sum is σ = 104695680. Its totient is φ = 30378240.

The previous prime is 61143037. The next prime is 61143059. The reversal of 61143045 is 54034116.

It is not a de Polignac number, because 61143045 - 2³ = 61143037 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15627 + ... + 19143.

It is an arithmetic number, because the mean of its divisors is an integer number (3271740).

Almost surely, 2^61143045 is an apocalyptic number.

It is an amenable number.

61143045 is a deficient number, since it is larger than the sum of its proper divisors (43552635).

61143045 is a wasteful number, since it uses less digits than its factorization.

61143045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61143045 is about 7819.4018313423. The cubic root of 61143045 is about 393.9571809651.

The spelling of 61143045 in words is "sixty-one million, one hundred forty-three thousand, forty-five".