75531985 has 16 divisors (see below), whose sum is σ = 93382416. Its totient is φ = 58606848.

The previous prime is 75531983. The next prime is 75532019. The reversal of 75531985 is 58913557.

It can be written as a sum of positive squares in 8 ways, for example, as 4028049 + 71503936 = 2007^2 + 8456^2 .

It is a cyclic number.

It is not a de Polignac number, because 75531985 - 2¹ = 75531983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75531983) 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, 102679 + ... + 103411.

It is an arithmetic number, because the mean of its divisors is an integer number (5836401).

Almost surely, 2^75531985 is an apocalyptic number.

It is an amenable number.

75531985 is a deficient number, since it is larger than the sum of its proper divisors (17850431).

75531985 is a wasteful number, since it uses less digits than its factorization.

75531985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332.

The product of its digits is 189000, while the sum is 43.

The square root of 75531985 is about 8690.9139335285. The cubic root of 75531985 is about 422.7110811094.

The spelling of 75531985 in words is "seventy-five million, five hundred thirty-one thousand, nine hundred eighty-five".