85557401 has 8 divisors (see below), whose sum is σ = 91354560. Its totient is φ = 79933392.

The previous prime is 85557397. The next prime is 85557443. The reversal of 85557401 is 10475558.

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 85557401 - 2² = 85557397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85559401) 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, 42266 + ... + 44243.

It is an arithmetic number, because the mean of its divisors is an integer number (11419320).

Almost surely, 2^85557401 is an apocalyptic number.

It is an amenable number.

85557401 is a deficient number, since it is larger than the sum of its proper divisors (5797159).

85557401 is a wasteful number, since it uses less digits than its factorization.

85557401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86575.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 85557401 is about 9249.7243742719. The cubic root of 85557401 is about 440.6419709507.

It can be divided in two parts, 85557 and 401, that added together give a palindrome (85958).

The spelling of 85557401 in words is "eighty-five million, five hundred fifty-seven thousand, four hundred one".