55124581 has 8 divisors (see below), whose sum is σ = 56938464. Its totient is φ = 53334960.

The previous prime is 55124569. The next prime is 55124599. The reversal of 55124581 is 18542155.

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

It is a cyclic number.

It is not a de Polignac number, because 55124581 - 2¹⁷ = 54993509 is a prime.

It is a super-2 number, since 2×55124581² = 6077438860851122, 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 (55124521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1390 + ... + 10591.

It is an arithmetic number, because the mean of its divisors is an integer number (7117308).

Almost surely, 2^55124581 is an apocalyptic number.

It is an amenable number.

55124581 is a deficient number, since it is larger than the sum of its proper divisors (1813883).

55124581 is a wasteful number, since it uses less digits than its factorization.

55124581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12131.

The product of its digits is 8000, while the sum is 31.

The square root of 55124581 is about 7424.5929854774. The cubic root of 55124581 is about 380.5821662896.

The spelling of 55124581 in words is "fifty-five million, one hundred twenty-four thousand, five hundred eighty-one".