55425408 has 128 divisors (see below), whose sum is σ = 156280320. Its totient is φ = 17381376.

The previous prime is 55425407. The next prime is 55425431. The reversal of 55425408 is 80452455.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55425401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667735 + ... + 667817.

It is an arithmetic number, because the mean of its divisors is an integer number (1220940).

Almost surely, 2^55425408 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 55425408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78140160).

55425408 is an abundant number, since it is smaller than the sum of its proper divisors (100854912).

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

55425408 is a wasteful number, since it uses less digits than its factorization.

55425408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 55425408 is about 7444.8242423848. The cubic root of 55425408 is about 381.2732176848.

The spelling of 55425408 in words is "fifty-five million, four hundred twenty-five thousand, four hundred eight".