85458557 has 4 divisors (see below), whose sum is σ = 85906176. Its totient is φ = 85010940.

The previous prime is 85458553. The next prime is 85458577. The reversal of 85458557 is 75585458.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85458557 - 2² = 85458553 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 (85458553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223523 + ... + 223904.

It is an arithmetic number, because the mean of its divisors is an integer number (21476544).

Almost surely, 2^85458557 is an apocalyptic number.

It is an amenable number.

85458557 is a deficient number, since it is larger than the sum of its proper divisors (447619).

85458557 is a wasteful number, since it uses less digits than its factorization.

85458557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447618.

The product of its digits is 1120000, while the sum is 47.

The square root of 85458557 is about 9244.3797520439. The cubic root of 85458557 is about 440.4722151372.

The spelling of 85458557 in words is "eighty-five million, four hundred fifty-eight thousand, five hundred fifty-seven".