61281485 has 16 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 48062976.

The previous prime is 61281469. The next prime is 61281487. The reversal of 61281485 is 58418216.

It is a cyclic number.

It is not a de Polignac number, because 61281485 - 2⁴ = 61281469 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 (61281487) 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, 65501 + ... + 66429.

It is an arithmetic number, because the mean of its divisors is an integer number (4687200).

Almost surely, 2^61281485 is an apocalyptic number.

It is an amenable number.

61281485 is a deficient number, since it is larger than the sum of its proper divisors (13713715).

61281485 is a wasteful number, since it uses less digits than its factorization.

61281485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its digits is 15360, while the sum is 35.

The square root of 61281485 is about 7828.2491656819. The cubic root of 61281485 is about 394.2542892796.

The spelling of 61281485 in words is "sixty-one million, two hundred eighty-one thousand, four hundred eighty-five".