55415360 has 224 divisors, whose sum is σ = 178198272. Its totient is φ = 15851520.

The previous prime is 55415351. The next prime is 55415377. The reversal of 55415360 is 6351455.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 320234 + ... + 320406.

It is an arithmetic number, because the mean of its divisors is an integer number (795528).

Almost surely, 2^55415360 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 55415360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89099136).

55415360 is an abundant number, since it is smaller than the sum of its proper divisors (122782912).

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

55415360 is a wasteful number, since it uses less digits than its factorization.

55415360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 55415360 is about 7444.1493805538. The cubic root of 55415360 is about 381.2501761174.

It can be divided in two parts, 5541 and 5360, that added together give a palindrome (10901).

The spelling of 55415360 in words is "fifty-five million, four hundred fifteen thousand, three hundred sixty".