55381371 has 12 divisors (see below), whose sum is σ = 77934312. Its totient is φ = 34977024.

The previous prime is 55381357. The next prime is 55381379. The reversal of 55381371 is 17318355.

It is not a de Polignac number, because 55381371 - 2⁶ = 55381307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55381379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24486 + ... + 26651.

It is an arithmetic number, because the mean of its divisors is an integer number (6494526).

Almost surely, 2^55381371 is an apocalyptic number.

55381371 is a deficient number, since it is larger than the sum of its proper divisors (22552941).

55381371 is a wasteful number, since it uses less digits than its factorization.

55381371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51178 (or 51159 counting only the distinct ones).

The product of its digits is 12600, while the sum is 33.

The square root of 55381371 is about 7441.8660966185. The cubic root of 55381371 is about 381.1722136027.

The spelling of 55381371 in words is "fifty-five million, three hundred eighty-one thousand, three hundred seventy-one".