55639293 has 8 divisors (see below), whose sum is σ = 74349888. Its totient is φ = 37010784.

The previous prime is 55639253. The next prime is 55639303. The reversal of 55639293 is 39293655.

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

It is not a de Polignac number, because 55639293 - 2¹³ = 55631101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55639253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18921 + ... + 21662.

It is an arithmetic number, because the mean of its divisors is an integer number (9293736).

Almost surely, 2^55639293 is an apocalyptic number.

It is an amenable number.

55639293 is a deficient number, since it is larger than the sum of its proper divisors (18710595).

55639293 is a wasteful number, since it uses less digits than its factorization.

55639293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41043.

The product of its digits is 218700, while the sum is 42.

The square root of 55639293 is about 7459.1750884397. The cubic root of 55639293 is about 381.7630288353.

The spelling of 55639293 in words is "fifty-five million, six hundred thirty-nine thousand, two hundred ninety-three".