55238508 has 144 divisors (see below), whose sum is σ = 163459296. Its totient is φ = 15575040.

The previous prime is 55238501. The next prime is 55238539. The reversal of 55238508 is 80583255.

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 (55238501) 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, 421603 + ... + 421733.

It is an arithmetic number, because the mean of its divisors is an integer number (1135134).

Almost surely, 2^55238508 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 55238508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81729648).

55238508 is an abundant number, since it is smaller than the sum of its proper divisors (108220788).

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

55238508 is a wasteful number, since it uses less digits than its factorization.

55238508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The square root of 55238508 is about 7432.2612978824. The cubic root of 55238508 is about 380.8441712967.

It can be divided in two parts, 552 and 38508, that added together give a triangular number (39060 = T₂₇₉).

The spelling of 55238508 in words is "fifty-five million, two hundred thirty-eight thousand, five hundred eight".