55538738 has 16 divisors (see below), whose sum is σ = 84689280. Its totient is φ = 27311856.

The previous prime is 55538737. The next prime is 55538771. The reversal of 55538738 is 83783555.

It is not an unprimeable number, because it can be changed into a prime (55538737) 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, 54320 + ... + 55332.

It is an arithmetic number, because the mean of its divisors is an integer number (5293080).

Almost surely, 2^55538738 is an apocalyptic number.

55538738 is a deficient number, since it is larger than the sum of its proper divisors (29150542).

55538738 is a wasteful number, since it uses less digits than its factorization.

55538738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441.

The product of its digits is 504000, while the sum is 44.

The square root of 55538738 is about 7452.4316836855. The cubic root of 55538738 is about 381.5329077079.

It can be divided in two parts, 555 and 38738, that added together give a palindrome (39293).

The spelling of 55538738 in words is "fifty-five million, five hundred thirty-eight thousand, seven hundred thirty-eight".