55526081 has 4 divisors (see below), whose sum is σ = 59797332. Its totient is φ = 51254832.

The previous prime is 55526077. The next prime is 55526083. The reversal of 55526081 is 18062555.

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 16974400 + 38551681 = 4120^2 + 6209^2 .

It is a cyclic number.

It is not a de Polignac number, because 55526081 - 2² = 55526077 is a prime.

It is a super-2 number, since 2×55526081² = 6166291342437122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55526083) 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, 2135606 + ... + 2135631.

It is an arithmetic number, because the mean of its divisors is an integer number (14949333).

Almost surely, 2^55526081 is an apocalyptic number.

It is an amenable number.

55526081 is a deficient number, since it is larger than the sum of its proper divisors (4271251).

55526081 is a wasteful number, since it uses less digits than its factorization.

55526081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271250.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 55526081 is about 7451.5824493862. The cubic root of 55526081 is about 381.5039223602.

The spelling of 55526081 in words is "fifty-five million, five hundred twenty-six thousand, eighty-one".