85378351 has 4 divisors (see below), whose sum is σ = 87685912. Its totient is φ = 83070792.

The previous prime is 85378331. The next prime is 85378357. The reversal of 85378351 is 15387358.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85378351 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 (85378357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153725 + ... + 1153798.

It is an arithmetic number, because the mean of its divisors is an integer number (21921478).

Almost surely, 2^85378351 is an apocalyptic number.

85378351 is a deficient number, since it is larger than the sum of its proper divisors (2307561).

85378351 is a wasteful number, since it uses less digits than its factorization.

85378351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307560.

The product of its digits is 100800, while the sum is 40.

The square root of 85378351 is about 9240.0406384388. The cubic root of 85378351 is about 440.3343722113.

The spelling of 85378351 in words is "eighty-five million, three hundred seventy-eight thousand, three hundred fifty-one".