55427339 has 4 divisors (see below), whose sum is σ = 60466200. Its totient is φ = 50388480.

The previous prime is 55427311. The next prime is 55427341. The reversal of 55427339 is 93372455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55427339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55427399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519414 + ... + 2519435.

It is an arithmetic number, because the mean of its divisors is an integer number (15116550).

Almost surely, 2^55427339 is an apocalyptic number.

55427339 is a deficient number, since it is larger than the sum of its proper divisors (5038861).

55427339 is a wasteful number, since it uses less digits than its factorization.

55427339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5038860.

The product of its digits is 113400, while the sum is 38.

The square root of 55427339 is about 7444.9539286687. The cubic root of 55427339 is about 381.2776454378.

Subtracting 55427339 from its reverse (93372455), we obtain a triangular number (37945116 = T₈₇₁₁).

The spelling of 55427339 in words is "fifty-five million, four hundred twenty-seven thousand, three hundred thirty-nine".