82526721 has 16 divisors (see below), whose sum is σ = 120528000. Its totient is φ = 49995008.

The previous prime is 82526711. The next prime is 82526729. The reversal of 82526721 is 12762528.

It is a cyclic number.

It is not a de Polignac number, because 82526721 - 2⁶ = 82526657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82526729) 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, 26421 + ... + 29378.

It is an arithmetic number, because the mean of its divisors is an integer number (7533000).

Almost surely, 2^82526721 is an apocalyptic number.

It is an amenable number.

82526721 is a deficient number, since it is larger than the sum of its proper divisors (38001279).

82526721 is a wasteful number, since it uses less digits than its factorization.

82526721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55848.

The product of its digits is 13440, while the sum is 33.

The square root of 82526721 is about 9084.4218858439. The cubic root of 82526721 is about 435.3763792287.

The spelling of 82526721 in words is "eighty-two million, five hundred twenty-six thousand, seven hundred twenty-one".