85257541 has 4 divisors (see below), whose sum is σ = 89744800. Its totient is φ = 80770284.

The previous prime is 85257479. The next prime is 85257547. The reversal of 85257541 is 14575258.

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, and also an emirpimes, since its reverse is a distinct semiprime: 14575258 = 2 ⋅7287629.

It is a cyclic number.

It is not a de Polignac number, because 85257541 - 2¹⁷ = 85126469 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 85257541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85257547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2243601 + ... + 2243638.

It is an arithmetic number, because the mean of its divisors is an integer number (22436200).

Almost surely, 2^85257541 is an apocalyptic number.

It is an amenable number.

85257541 is a deficient number, since it is larger than the sum of its proper divisors (4487259).

85257541 is a wasteful number, since it uses less digits than its factorization.

85257541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487258.

The product of its digits is 56000, while the sum is 37.

The square root of 85257541 is about 9233.5010153246. The cubic root of 85257541 is about 440.1265837586.

The spelling of 85257541 in words is "eighty-five million, two hundred fifty-seven thousand, five hundred forty-one".