55421334 has 20 divisors (see below), whose sum is σ = 124185204. Its totient is φ = 18473724.

The previous prime is 55421323. The next prime is 55421357. The reversal of 55421334 is 43312455.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55421298 and 55421307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 170892 + ... + 171215.

Almost surely, 2^55421334 is an apocalyptic number.

55421334 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

55421334 is an abundant number, since it is smaller than the sum of its proper divisors (68763870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55421334 is a wasteful number, since it uses less digits than its factorization.

55421334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342121 (or 342112 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 55421334 is about 7444.5506244501. The cubic root of 55421334 is about 381.2638757290.

Adding to 55421334 its reverse (43312455), we get a palindrome (98733789).

It can be divided in two parts, 55421 and 334, that added together give a palindrome (55755).

The spelling of 55421334 in words is "fifty-five million, four hundred twenty-one thousand, three hundred thirty-four".