55671081 has 4 divisors (see below), whose sum is σ = 74228112. Its totient is φ = 37114052.

The previous prime is 55671079. The next prime is 55671089. The reversal of 55671081 is 18017655.

55671081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55671081 - 2¹ = 55671079 is a prime.

It is a super-2 number, since 2×55671081² = 6198538519417122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55671089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9278511 + ... + 9278516.

It is an arithmetic number, because the mean of its divisors is an integer number (18557028).

Almost surely, 2^55671081 is an apocalyptic number.

It is an amenable number.

55671081 is a deficient number, since it is larger than the sum of its proper divisors (18557031).

55671081 is a wasteful number, since it uses less digits than its factorization.

55671081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18557030.

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 55671081 is about 7461.3055828052. The cubic root of 55671081 is about 381.8357183092.

The spelling of 55671081 in words is "fifty-five million, six hundred seventy-one thousand, eighty-one".