55714428 has 144 divisors (see below), whose sum is σ = 178214400. Its totient is φ = 14256000.

The previous prime is 55714381. The next prime is 55714429. The reversal of 55714428 is 82441755.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 55714392 and 55714401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55714429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279873 + ... + 280071.

It is an arithmetic number, because the mean of its divisors is an integer number (1237600).

Almost surely, 2^55714428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55714428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89107200).

55714428 is an abundant number, since it is smaller than the sum of its proper divisors (122499972).

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

55714428 is a wasteful number, since it uses less digits than its factorization.

55714428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 323 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 55714428 is about 7464.2098041253. The cubic root of 55714428 is about 381.9347951168.

It can be divided in two parts, 5571 and 4428, that added together give a palindrome (9999).

The spelling of 55714428 in words is "fifty-five million, seven hundred fourteen thousand, four hundred twenty-eight".