85018957 has 4 divisors (see below), whose sum is σ = 87761536. Its totient is φ = 82276380.

The previous prime is 85018951. The next prime is 85018963. The reversal of 85018957 is 75981058.

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 an interprime number because it is at equal distance from previous prime (85018951) and next prime (85018963).

It is a cyclic number.

It is not a de Polignac number, because 85018957 - 2³ = 85018949 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 (85018951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371243 + ... + 1371304.

It is an arithmetic number, because the mean of its divisors is an integer number (21940384).

Almost surely, 2^85018957 is an apocalyptic number.

85018957 is the 5324-th hex number.

It is an amenable number.

85018957 is a deficient number, since it is larger than the sum of its proper divisors (2742579).

85018957 is a wasteful number, since it uses less digits than its factorization.

85018957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742578.

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 85018957 is about 9220.5724876496. The cubic root of 85018957 is about 439.7156513352.

The spelling of 85018957 in words is "eighty-five million, eighteen thousand, nine hundred fifty-seven".