55547138 has 16 divisors (see below), whose sum is σ = 87398784. Its totient is φ = 26446320.

The previous prime is 55547131. The next prime is 55547153. The reversal of 55547138 is 83174555.

It is not an unprimeable number, because it can be changed into a prime (55547131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4508 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (5462424).

Almost surely, 2^55547138 is an apocalyptic number.

55547138 is a deficient number, since it is larger than the sum of its proper divisors (31851646).

55547138 is a wasteful number, since it uses less digits than its factorization.

55547138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16057.

The product of its digits is 84000, while the sum is 38.

The square root of 55547138 is about 7452.9952368159. The cubic root of 55547138 is about 381.5521418196.

The spelling of 55547138 in words is "fifty-five million, five hundred forty-seven thousand, one hundred thirty-eight".