55127040 has 176 divisors, whose sum is σ = 182952672. Its totient is φ = 14155776.

The previous prime is 55127029. The next prime is 55127041. The reversal of 55127040 is 4072155.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 55127040.

It is not an unprimeable number, because it can be changed into a prime (55127041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568272 + ... + 568368.

Almost surely, 2^55127040 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 55127040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91476336).

55127040 is an abundant number, since it is smaller than the sum of its proper divisors (127825632).

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

55127040 is a wasteful number, since it uses less digits than its factorization.

55127040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 55127040 is about 7424.7585819338. The cubic root of 55127040 is about 380.5878252147.

Adding to 55127040 its reverse (4072155), we get a palindrome (59199195).

The spelling of 55127040 in words is "fifty-five million, one hundred twenty-seven thousand, forty".