55406583 has 12 divisors (see below), whose sum is σ = 80102880. Its totient is φ = 36904896.

The previous prime is 55406573. The next prime is 55406591. The reversal of 55406583 is 38560455.

It is not a de Polignac number, because 55406583 - 2¹³ = 55398391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55406503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12303 + ... + 16191.

It is an arithmetic number, because the mean of its divisors is an integer number (6675240).

Almost surely, 2^55406583 is an apocalyptic number.

55406583 is a deficient number, since it is larger than the sum of its proper divisors (24696297).

55406583 is a wasteful number, since it uses less digits than its factorization.

55406583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5478 (or 5475 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 55406583 is about 7443.5598338429. The cubic root of 55406583 is about 381.2300468640.

The spelling of 55406583 in words is "fifty-five million, four hundred six thousand, five hundred eighty-three".