55249983 has 12 divisors (see below), whose sum is σ = 84500208. Its totient is φ = 34666560.

The previous prime is 55249981. The next prime is 55250003. The reversal of 55249983 is 38994255.

55249983 is a `hidden beast` number, since 552 + 4 + 9 + 98 + 3 = 666.

It is not a de Polignac number, because 55249983 - 2¹ = 55249981 is a prime.

It is a super-3 number, since 3×55249983³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55249981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180403 + ... + 180708.

It is an arithmetic number, because the mean of its divisors is an integer number (7041684).

Almost surely, 2^55249983 is an apocalyptic number.

55249983 is a deficient number, since it is larger than the sum of its proper divisors (29250225).

55249983 is a wasteful number, since it uses less digits than its factorization.

55249983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361134 (or 361131 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 55249983 is about 7433.0332301154. The cubic root of 55249983 is about 380.8705410910.

The spelling of 55249983 in words is "fifty-five million, two hundred forty-nine thousand, nine hundred eighty-three".