82655381 has 4 divisors (see below), whose sum is σ = 82673664. Its totient is φ = 82637100.

The previous prime is 82655371. The next prime is 82655387. The reversal of 82655381 is 18355628.

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 82655381 - 2⁶ = 82655317 is a prime.

It is a super-2 number, since 2×82655381² = 13663824016510322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82655387) 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, 3146 + ... + 13236.

It is an arithmetic number, because the mean of its divisors is an integer number (20668416).

Almost surely, 2^82655381 is an apocalyptic number.

It is an amenable number.

82655381 is a deficient number, since it is larger than the sum of its proper divisors (18283).

82655381 is a wasteful number, since it uses less digits than its factorization.

82655381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18282.

The product of its digits is 57600, while the sum is 38.

The square root of 82655381 is about 9091.5004812187. The cubic root of 82655381 is about 435.6025138264.

The spelling of 82655381 in words is "eighty-two million, six hundred fifty-five thousand, three hundred eighty-one".