82725553 has 4 divisors (see below), whose sum is σ = 87591780. Its totient is φ = 77859328.

The previous prime is 82725551. The next prime is 82725569. The reversal of 82725553 is 35552728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33837489 + 48888064 = 5817^2 + 6992^2 .

It is a cyclic number.

It is not a de Polignac number, because 82725553 - 2¹ = 82725551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82725551) 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, 2433088 + ... + 2433121.

It is an arithmetic number, because the mean of its divisors is an integer number (21897945).

Almost surely, 2^82725553 is an apocalyptic number.

It is an amenable number.

82725553 is a deficient number, since it is larger than the sum of its proper divisors (4866227).

82725553 is a wasteful number, since it uses less digits than its factorization.

82725553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866226.

The product of its digits is 84000, while the sum is 37.

The square root of 82725553 is about 9095.3588714245. The cubic root of 82725553 is about 435.7257502211.

The spelling of 82725553 in words is "eighty-two million, seven hundred twenty-five thousand, five hundred fifty-three".