82555977 has 16 divisors (see below), whose sum is σ = 126028800. Its totient is φ = 47088912.

The previous prime is 82555951. The next prime is 82555981. The reversal of 82555977 is 77955528.

It is not a de Polignac number, because 82555977 - 2¹¹ = 82553929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82555987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9298 + ... + 15860.

It is an arithmetic number, because the mean of its divisors is an integer number (7876800).

Almost surely, 2^82555977 is an apocalyptic number.

It is an amenable number.

82555977 is a deficient number, since it is larger than the sum of its proper divisors (43472823).

82555977 is a wasteful number, since it uses less digits than its factorization.

82555977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7172.

The product of its digits is 882000, while the sum is 48.

The square root of 82555977 is about 9086.0319722088. The cubic root of 82555977 is about 435.4278206138.

The spelling of 82555977 in words is "eighty-two million, five hundred fifty-five thousand, nine hundred seventy-seven".