55074581 has 8 divisors (see below), whose sum is σ = 57573504. Its totient is φ = 52584400.

The previous prime is 55074571. The next prime is 55074583. The reversal of 55074581 is 18547055.

55074581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55074581 is a prime.

It is a super-2 number, since 2×55074581² = 6066418944651122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55074583) 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 7 ways as a sum of consecutive naturals, for example, 13031 + ... + 16731.

It is an arithmetic number, because the mean of its divisors is an integer number (7196688).

Almost surely, 2^55074581 is an apocalyptic number.

It is an amenable number.

55074581 is a deficient number, since it is larger than the sum of its proper divisors (2498923).

55074581 is a wasteful number, since it uses less digits than its factorization.

55074581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 55074581 is about 7421.2250336451. The cubic root of 55074581 is about 380.4670641927.

It can be divided in two parts, 55074 and 581, that added together give a palindrome (55655).

The spelling of 55074581 in words is "fifty-five million, seventy-four thousand, five hundred eighty-one".