85381377 has 4 divisors (see below), whose sum is σ = 113841840. Its totient is φ = 56920916.

The previous prime is 85381369. The next prime is 85381379. The reversal of 85381377 is 77318358.

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 a cyclic number.

It is not a de Polignac number, because 85381377 - 2³ = 85381369 is a prime.

It is a super-2 number, since 2×85381377² = 14579959076832258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85381379) 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, 14230227 + ... + 14230232.

It is an arithmetic number, because the mean of its divisors is an integer number (28460460).

Almost surely, 2^85381377 is an apocalyptic number.

It is an amenable number.

85381377 is a deficient number, since it is larger than the sum of its proper divisors (28460463).

85381377 is a wasteful number, since it uses less digits than its factorization.

85381377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28460462.

The product of its digits is 141120, while the sum is 42.

The square root of 85381377 is about 9240.2043808565. The cubic root of 85381377 is about 440.3395742953.

It can be divided in two parts, 85381 and 377, that added together give a palindrome (85758).

The spelling of 85381377 in words is "eighty-five million, three hundred eighty-one thousand, three hundred seventy-seven".