55254381 has 24 divisors (see below), whose sum is σ = 91177920. Its totient is φ = 29143296.

The previous prime is 55254371. The next prime is 55254391. The reversal of 55254381 is 18345255.

It is an interprime number because it is at equal distance from previous prime (55254371) and next prime (55254391).

It is not a de Polignac number, because 55254381 - 2⁶ = 55254317 is a prime.

It is a super-2 number, since 2×55254381² = 6106093239386322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55254361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4236 + ... + 11333.

It is an arithmetic number, because the mean of its divisors is an integer number (3799080).

Almost surely, 2^55254381 is an apocalyptic number.

It is an amenable number.

55254381 is a deficient number, since it is larger than the sum of its proper divisors (35923539).

55254381 is a wasteful number, since it uses less digits than its factorization.

55254381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15605 (or 15592 counting only the distinct ones).

The product of its digits is 24000, while the sum is 33.

The square root of 55254381 is about 7433.3290657686. The cubic root of 55254381 is about 380.8806468208.

The spelling of 55254381 in words is "fifty-five million, two hundred fifty-four thousand, three hundred eighty-one".