82015477 has 2 divisors, whose sum is σ = 82015478. Its totient is φ = 82015476.

The previous prime is 82015459. The next prime is 82015523. The reversal of 82015477 is 77451028.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80442961 + 1572516 = 8969^2 + 1254^2 .

It is a cyclic number.

It is not a de Polignac number, because 82015477 - 2¹¹ = 82013429 is a prime.

It is equal to p_4780276 and since 82015477 and 4780276 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82015177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41007738 + 41007739.

It is an arithmetic number, because the mean of its divisors is an integer number (41007739).

Almost surely, 2^82015477 is an apocalyptic number.

It is an amenable number.

82015477 is a deficient number, since it is larger than the sum of its proper divisors (1).

82015477 is an equidigital number, since it uses as much as digits as its factorization.

82015477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 82015477 is about 9056.2396721818. The cubic root of 82015477 is about 434.4754800037.

The spelling of 82015477 in words is "eighty-two million, fifteen thousand, four hundred seventy-seven".