55474581 has 16 divisors (see below), whose sum is σ = 76241984. Its totient is φ = 35852544.

The previous prime is 55474579. The next prime is 55474583. The reversal of 55474581 is 18547455.

It is an interprime number because it is at equal distance from previous prime (55474579) and next prime (55474583).

It is not a de Polignac number, because 55474581 - 2¹ = 55474579 is a prime.

It is a super-2 number, since 2×55474581² = 6154858274251122, 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 (55474583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36666 + ... + 38148.

It is an arithmetic number, because the mean of its divisors is an integer number (4765124).

Almost surely, 2^55474581 is an apocalyptic number.

It is an amenable number.

55474581 is a deficient number, since it is larger than the sum of its proper divisors (20767403).

55474581 is a wasteful number, since it uses less digits than its factorization.

55474581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860.

The product of its digits is 112000, while the sum is 39.

The square root of 55474581 is about 7448.1260059159. The cubic root of 55474581 is about 381.3859385884.

The spelling of 55474581 in words is "fifty-five million, four hundred seventy-four thousand, five hundred eighty-one".