55639534 has 8 divisors (see below), whose sum is σ = 83499120. Its totient is φ = 27806496.

The previous prime is 55639531. The next prime is 55639541. The reversal of 55639534 is 43593655.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55639531) 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 3 ways as a sum of consecutive naturals, for example, 114 + ... + 10549.

It is an arithmetic number, because the mean of its divisors is an integer number (10437390).

Almost surely, 2^55639534 is an apocalyptic number.

55639534 is a deficient number, since it is larger than the sum of its proper divisors (27859586).

55639534 is a wasteful number, since it uses less digits than its factorization.

55639534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13274.

The product of its digits is 243000, while the sum is 40.

The square root of 55639534 is about 7459.1912430236. The cubic root of 55639534 is about 381.7635800331.

The spelling of 55639534 in words is "fifty-five million, six hundred thirty-nine thousand, five hundred thirty-four".