55983139 has 8 divisors (see below), whose sum is σ = 59040000. Its totient is φ = 52937352.

The previous prime is 55983133. The next prime is 55983167. The reversal of 55983139 is 93138955.

55983139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 55983139 - 2³ = 55983131 is a prime.

It is a super-2 number, since 2×55983139² = 6268223704586642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55983095 and 55983104.

It is not an unprimeable number, because it can be changed into a prime (55983131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8922 + ... + 13840.

It is an arithmetic number, because the mean of its divisors is an integer number (7380000).

Almost surely, 2^55983139 is an apocalyptic number.

55983139 is a deficient number, since it is larger than the sum of its proper divisors (3056861).

55983139 is a wasteful number, since it uses less digits than its factorization.

55983139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5537.

The product of its digits is 145800, while the sum is 43.

The square root of 55983139 is about 7482.1881157854. The cubic root of 55983139 is about 382.5478351612.

The spelling of 55983139 in words is "fifty-five million, nine hundred eighty-three thousand, one hundred thirty-nine".