82545551 has 16 divisors (see below), whose sum is σ = 94307328. Its totient is φ = 71517600.

The previous prime is 82545503. The next prime is 82545559. The reversal of 82545551 is 15554528.

It is not a de Polignac number, because 82545551 - 2⁶ = 82545487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82545559) 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, 108665 + ... + 109421.

It is an arithmetic number, because the mean of its divisors is an integer number (5894208).

Almost surely, 2^82545551 is an apocalyptic number.

82545551 is a deficient number, since it is larger than the sum of its proper divisors (11761777).

82545551 is a wasteful number, since it uses less digits than its factorization.

82545551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222.

The product of its digits is 40000, while the sum is 35.

The square root of 82545551 is about 9085.4582162927. The cubic root of 82545551 is about 435.4094897723.

The spelling of 82545551 in words is "eighty-two million, five hundred forty-five thousand, five hundred fifty-one".