85201557 has 8 divisors (see below), whose sum is σ = 129830976. Its totient is φ = 48686592.

The previous prime is 85201541. The next prime is 85201561. The reversal of 85201557 is 75510258.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85201557 - 2⁴ = 85201541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85201517) 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, 2028588 + ... + 2028629.

It is an arithmetic number, because the mean of its divisors is an integer number (16228872).

Almost surely, 2^85201557 is an apocalyptic number.

It is an amenable number.

85201557 is a deficient number, since it is larger than the sum of its proper divisors (44629419).

85201557 is a wasteful number, since it uses less digits than its factorization.

85201557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057227.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 85201557 is about 9230.4689480004. The cubic root of 85201557 is about 440.0302269179.

It can be divided in two parts, 85201 and 557, that added together give a palindrome (85758).

The spelling of 85201557 in words is "eighty-five million, two hundred one thousand, five hundred fifty-seven".