55363140 has 108 divisors (see below), whose sum is σ = 195383916. Its totient is φ = 12652416.

The previous prime is 55363123. The next prime is 55363141. The reversal of 55363140 is 4136355.

It can be written as a sum of positive squares in 2 ways, for example, as 40755456 + 14607684 = 6384^2 + 3822^2 .

It is not an unprimeable number, because it can be changed into a prime (55363141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5682 + ... + 11958.

Almost surely, 2^55363140 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 55363140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97691958).

55363140 is an abundant number, since it is smaller than the sum of its proper divisors (140020776).

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

55363140 is a wasteful number, since it uses less digits than its factorization.

55363140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306 (or 6294 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 55363140 is about 7440.6411014105. The cubic root of 55363140 is about 381.1303829704.

Adding to 55363140 its reverse (4136355), we get a palindrome (59499495).

The spelling of 55363140 in words is "fifty-five million, three hundred sixty-three thousand, one hundred forty".