55981347 has 16 divisors (see below), whose sum is σ = 76140960. Its totient is φ = 36576000.

The previous prime is 55981337. The next prime is 55981361. The reversal of 55981347 is 74318955.

55981347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55981347 - 2²⁴ = 39204131 is a prime.

It is a super-2 number, since 2×55981347² = 6267822423868818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55981299 and 55981308.

It is not an unprimeable number, because it can be changed into a prime (55981307) 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 15 ways as a sum of consecutive naturals, for example, 92847 + ... + 93447.

It is an arithmetic number, because the mean of its divisors is an integer number (4758810).

Almost surely, 2^55981347 is an apocalyptic number.

55981347 is a deficient number, since it is larger than the sum of its proper divisors (20159613).

55981347 is a wasteful number, since it uses less digits than its factorization.

55981347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174.

The product of its digits is 151200, while the sum is 42.

The square root of 55981347 is about 7482.0683637615. The cubic root of 55981347 is about 382.5437533785.

The spelling of 55981347 in words is "fifty-five million, nine hundred eighty-one thousand, three hundred forty-seven".