85500407 has 4 divisors (see below), whose sum is σ = 89217840. Its totient is φ = 81782976.

The previous prime is 85500397. The next prime is 85500413. The reversal of 85500407 is 70400558.

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

It is a cyclic number.

It is not a de Polignac number, because 85500407 - 2¹⁰ = 85499383 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 85500407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85500427) 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, 1858682 + ... + 1858727.

It is an arithmetic number, because the mean of its divisors is an integer number (22304460).

Almost surely, 2^85500407 is an apocalyptic number.

85500407 is a deficient number, since it is larger than the sum of its proper divisors (3717433).

85500407 is a wasteful number, since it uses less digits than its factorization.

85500407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3717432.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 85500407 is about 9246.6430124667. The cubic root of 85500407 is about 440.5441047743.

The spelling of 85500407 in words is "eighty-five million, five hundred thousand, four hundred seven".