75387285 has 12 divisors (see below), whose sum is σ = 130671372. Its totient is φ = 40206528.

The previous prime is 75387283. The next prime is 75387293. The reversal of 75387285 is 58278357.

It can be written as a sum of positive squares in 2 ways, for example, as 37527876 + 37859409 = 6126^2 + 6153^2 .

It is not a de Polignac number, because 75387285 - 2¹ = 75387283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1675273 = 75387285 / (7 + 5 + 3 + 8 + 7 + 2 + 8 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 75387285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75387281) 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, 837592 + ... + 837681.

It is an arithmetic number, because the mean of its divisors is an integer number (10889281).

Almost surely, 2^75387285 is an apocalyptic number.

It is an amenable number.

75387285 is a deficient number, since it is larger than the sum of its proper divisors (55284087).

75387285 is a wasteful number, since it uses less digits than its factorization.

75387285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675284 (or 1675281 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 75387285 is about 8682.5851565072. The cubic root of 75387285 is about 422.4409730453.

The spelling of 75387285 in words is "seventy-five million, three hundred eighty-seven thousand, two hundred eighty-five".