85597901 has 4 divisors (see below), whose sum is σ = 85686492. Its totient is φ = 85509312.

The previous prime is 85597871. The next prime is 85597921. The reversal of 85597901 is 10979558.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79477225 + 6120676 = 8915^2 + 2474^2 .

It is a cyclic number.

It is not a de Polignac number, because 85597901 - 2¹⁰ = 85596877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85597921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42830 + ... + 44783.

It is an arithmetic number, because the mean of its divisors is an integer number (21421623).

Almost surely, 2^85597901 is an apocalyptic number.

It is an amenable number.

85597901 is a deficient number, since it is larger than the sum of its proper divisors (88591).

85597901 is an equidigital number, since it uses as much as digits as its factorization.

85597901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88590.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 85597901 is about 9251.9133696766. The cubic root of 85597901 is about 440.7114883525.

The spelling of 85597901 in words is "eighty-five million, five hundred ninety-seven thousand, nine hundred one".