55560140 has 24 divisors (see below), whose sum is σ = 117170592. Its totient is φ = 22129920.

The previous prime is 55560139. The next prime is 55560173. The reversal of 55560140 is 4106555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944 + ... + 10583.

It is an arithmetic number, because the mean of its divisors is an integer number (4882108).

Almost surely, 2^55560140 is an apocalyptic number.

It is an amenable number.

55560140 is an abundant number, since it is smaller than the sum of its proper divisors (61610452).

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

55560140 is a wasteful number, since it uses less digits than its factorization.

55560140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11777 (or 11775 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 55560140 is about 7453.8674525376. The cubic root of 55560140 is about 381.5819096535.

Adding to 55560140 its reverse (4106555), we get a palindrome (59666695).

The spelling of 55560140 in words is "fifty-five million, five hundred sixty thousand, one hundred forty".