85087551 has 8 divisors (see below), whose sum is σ = 114573744. Its totient is φ = 56163200.

The previous prime is 85087517. The next prime is 85087571. The reversal of 85087551 is 15578058.

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 85087551 - 2⁶ = 85087487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85087571) 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, 140106 + ... + 140711.

It is an arithmetic number, because the mean of its divisors is an integer number (14321718).

Almost surely, 2^85087551 is an apocalyptic number.

85087551 is a deficient number, since it is larger than the sum of its proper divisors (29486193).

85087551 is a wasteful number, since it uses less digits than its factorization.

85087551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280921.

The product of its (nonzero) digits is 56000, while the sum is 39.

The square root of 85087551 is about 9224.2913548955. The cubic root of 85087551 is about 439.8338749584.

The spelling of 85087551 in words is "eighty-five million, eighty-seven thousand, five hundred fifty-one".