61285075 has 12 divisors (see below), whose sum is σ = 76577688. Its totient is φ = 48651200.

The previous prime is 61285057. The next prime is 61285079. The reversal of 61285075 is 57058216.

It is not a de Polignac number, because 61285075 - 2⁵ = 61285043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61285075.

It is not an unprimeable number, because it can be changed into a prime (61285079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6082 + ... + 12631.

It is an arithmetic number, because the mean of its divisors is an integer number (6381474).

Almost surely, 2^61285075 is an apocalyptic number.

61285075 is a deficient number, since it is larger than the sum of its proper divisors (15292613).

61285075 is a wasteful number, since it uses less digits than its factorization.

61285075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18854 (or 18849 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 61285075 is about 7828.4784600841. The cubic root of 61285075 is about 394.2619878815.

The spelling of 61285075 in words is "sixty-one million, two hundred eighty-five thousand, seventy-five".