55277394 has 16 divisors (see below), whose sum is σ = 111040320. Its totient is φ = 18344880.

The previous prime is 55277363. The next prime is 55277399. The reversal of 55277394 is 49377255.

It is not an unprimeable number, because it can be changed into a prime (55277399) 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, 18742 + ... + 21489.

It is an arithmetic number, because the mean of its divisors is an integer number (6940020).

Almost surely, 2^55277394 is an apocalyptic number.

55277394 is an abundant number, since it is smaller than the sum of its proper divisors (55762926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55277394 is a wasteful number, since it uses less digits than its factorization.

55277394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40465.

The product of its digits is 264600, while the sum is 42.

The square root of 55277394 is about 7434.8768651539. The cubic root of 55277394 is about 380.9335173780.

It can be divided in two parts, 5527 and 7394, that added together give a palindrome (12921).

The spelling of 55277394 in words is "fifty-five million, two hundred seventy-seven thousand, three hundred ninety-four".