61090045 has 16 divisors (see below), whose sum is σ = 74882880. Its totient is φ = 47833984.

The previous prime is 61090039. The next prime is 61090049. The reversal of 61090045 is 54009016.

It is a cyclic number.

It is not a de Polignac number, because 61090045 - 2¹¹ = 61087997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61090049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46974 + ... + 48256.

It is an arithmetic number, because the mean of its divisors is an integer number (4680180).

Almost surely, 2^61090045 is an apocalyptic number.

It is an amenable number.

61090045 is a deficient number, since it is larger than the sum of its proper divisors (13792835).

61090045 is a wasteful number, since it uses less digits than its factorization.

61090045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 61090045 is about 7816.0120905741. The cubic root of 61090045 is about 393.8433181021.

The spelling of 61090045 in words is "sixty-one million, ninety thousand, forty-five".