55300140 has 72 divisors (see below), whose sum is σ = 191711520. Its totient is φ = 12639744.

The previous prime is 55300121. The next prime is 55300159. The reversal of 55300140 is 4100355.

It is an interprime number because it is at equal distance from previous prime (55300121) and next prime (55300159).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20685 + ... + 23204.

It is an arithmetic number, because the mean of its divisors is an integer number (2662660).

Almost surely, 2^55300140 is an apocalyptic number.

It is an amenable number.

55300140 is an abundant number, since it is smaller than the sum of its proper divisors (136411380).

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

55300140 is a wasteful number, since it uses less digits than its factorization.

55300140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43911 (or 43906 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55300140 is about 7436.4063901861. The cubic root of 55300140 is about 380.9857601060.

Adding to 55300140 its reverse (4100355), we get a palindrome (59400495).

The spelling of 55300140 in words is "fifty-five million, three hundred thousand, one hundred forty".