55127520 has 192 divisors, whose sum is σ = 220631040. Its totient is φ = 12593664.

The previous prime is 55127519. The next prime is 55127537. The reversal of 55127520 is 2572155.

It is a happy number.

It is a super-2 number, since 2×55127520² = 6078086922700800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 29329 + ... + 31151.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^55127520 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 55127520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110315520).

55127520 is an abundant number, since it is smaller than the sum of its proper divisors (165503520).

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

55127520 is a wasteful number, since it uses less digits than its factorization.

55127520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1840 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55127520 is about 7424.7909061468. The cubic root of 55127520 is about 380.5889298246.

Adding to 55127520 its reverse (2572155), we get a palindrome (57699675).

The spelling of 55127520 in words is "fifty-five million, one hundred twenty-seven thousand, five hundred twenty".