55276320 has 288 divisors, whose sum is σ = 207385920. Its totient is φ = 12257280.

The previous prime is 55276313. The next prime is 55276327. The reversal of 55276320 is 2367255.

It is an interprime number because it is at equal distance from previous prime (55276313) and next prime (55276327).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (55276327) 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, 1906066 + ... + 1906094.

It is an arithmetic number, because the mean of its divisors is an integer number (720090).

Almost surely, 2^55276320 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 55276320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103692960).

55276320 is an abundant number, since it is smaller than the sum of its proper divisors (152109600).

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

55276320 is a wasteful number, since it uses less digits than its factorization.

55276320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 55276320 is about 7434.8046376485. The cubic root of 55276320 is about 380.9310502739.

The spelling of 55276320 in words is "fifty-five million, two hundred seventy-six thousand, three hundred twenty".