55437408 has 216 divisors, whose sum is σ = 183449448. Its totient is φ = 15814656.

The previous prime is 55437407. The next prime is 55437413. The reversal of 55437408 is 80473455.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55437401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 827391 + ... + 827457.

It is an arithmetic number, because the mean of its divisors is an integer number (849303).

Almost surely, 2^55437408 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 55437408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91724724).

55437408 is an abundant number, since it is smaller than the sum of its proper divisors (128012040).

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

55437408 is a wasteful number, since it uses less digits than its factorization.

55437408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 55437408 is about 7445.6301277998. The cubic root of 55437408 is about 381.3007318318.

The spelling of 55437408 in words is "fifty-five million, four hundred thirty-seven thousand, four hundred eight".