55220140340 has 12 divisors (see below), whose sum is σ = 115962294756. Its totient is φ = 22088056128.

The previous prime is 55220140337. The next prime is 55220140343. The reversal of 55220140340 is 4304102255.

It is a happy number.

55220140340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55220140337) and next prime (55220140343).

It can be written as a sum of positive squares in 2 ways, for example, as 10097034256 + 45123106084 = 100484^2 + 212422^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55220140343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380503489 + ... + 1380503528.

It is an arithmetic number, because the mean of its divisors is an integer number (9663524563).

Almost surely, 2^55220140340 is an apocalyptic number.

It is an amenable number.

55220140340 is an abundant number, since it is smaller than the sum of its proper divisors (60742154416).

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

55220140340 is a wasteful number, since it uses less digits than its factorization.

55220140340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2761007026 (or 2761007024 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 55220140340 its reverse (4304102255), we get a palindrome (59524242595).

The spelling of 55220140340 in words is "fifty-five billion, two hundred twenty million, one hundred forty thousand, three hundred forty".