55381436 has 24 divisors (see below), whose sum is σ = 106414896. Its totient is φ = 25009920.

The previous prime is 55381423. The next prime is 55381439. The reversal of 55381436 is 63418355.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 55381396 and 55381405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55381439) 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, 2900 + ... + 10916.

It is an arithmetic number, because the mean of its divisors is an integer number (4433954).

Almost surely, 2^55381436 is an apocalyptic number.

It is an amenable number.

55381436 is a deficient number, since it is larger than the sum of its proper divisors (51033460).

55381436 is a wasteful number, since it uses less digits than its factorization.

55381436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8189 (or 8187 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 55381436 is about 7441.8704638014. The cubic root of 55381436 is about 381.1723627274.

The spelling of 55381436 in words is "fifty-five million, three hundred eighty-one thousand, four hundred thirty-six".