55540296 has 128 divisors (see below), whose sum is σ = 178464000. Its totient is φ = 15676416.

The previous prime is 55540283. The next prime is 55540297. The reversal of 55540296 is 69204555.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55540296.

It is not an unprimeable number, because it can be changed into a prime (55540297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164640 + ... + 164976.

It is an arithmetic number, because the mean of its divisors is an integer number (1394250).

Almost surely, 2^55540296 is an apocalyptic number.

55540296 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55540296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89232000).

55540296 is an abundant number, since it is smaller than the sum of its proper divisors (122923704).

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

55540296 is a wasteful number, since it uses less digits than its factorization.

55540296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 55540296 is about 7452.5362125923. The cubic root of 55540296 is about 381.5364753242.

The spelling of 55540296 in words is "fifty-five million, five hundred forty thousand, two hundred ninety-six".