55484391 has 4 divisors (see below), whose sum is σ = 73979192. Its totient is φ = 36989592.

The previous prime is 55484383. The next prime is 55484449. The reversal of 55484391 is 19348455.

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

It is not a de Polignac number, because 55484391 - 2³ = 55484383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55484371) 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, 9247396 + ... + 9247401.

It is an arithmetic number, because the mean of its divisors is an integer number (18494798).

Almost surely, 2^55484391 is an apocalyptic number.

55484391 is a deficient number, since it is larger than the sum of its proper divisors (18494801).

55484391 is a wasteful number, since it uses less digits than its factorization.

55484391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18494800.

The product of its digits is 86400, while the sum is 39.

The square root of 55484391 is about 7448.7845317206. The cubic root of 55484391 is about 381.4084184069.

The spelling of 55484391 in words is "fifty-five million, four hundred eighty-four thousand, three hundred ninety-one".