85612553 has 8 divisors (see below), whose sum is σ = 95377800. Its totient is φ = 76301568.

The previous prime is 85612477. The next prime is 85612567. The reversal of 85612553 is 35521658.

It can be written as a sum of positive squares in 4 ways, for example, as 3655744 + 81956809 = 1912^2 + 9053^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85612553 - 2¹⁰ = 85611529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85612573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113168 + ... + 113921.

It is an arithmetic number, because the mean of its divisors is an integer number (11922225).

Almost surely, 2^85612553 is an apocalyptic number.

It is an amenable number.

85612553 is a deficient number, since it is larger than the sum of its proper divisors (9765247).

85612553 is a wasteful number, since it uses less digits than its factorization.

85612553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227131.

The product of its digits is 36000, while the sum is 35.

The square root of 85612553 is about 9252.7051720024. The cubic root of 85612553 is about 440.7366328021.

The spelling of 85612553 in words is "eighty-five million, six hundred twelve thousand, five hundred fifty-three".