55403250440 has 16 divisors (see below), whose sum is σ = 124657313580. Its totient is φ = 22161300160.

The previous prime is 55403250433. The next prime is 55403250467. The reversal of 55403250440 is 4405230455.

It can be written as a sum of positive squares in 2 ways, for example, as 52023223396 + 3380027044 = 228086^2 + 58138^2 .

It is a junction number, because it is equal to n+sod(n) for n = 55403250397 and 55403250406.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692540591 + ... + 692540670.

Almost surely, 2^55403250440 is an apocalyptic number.

It is an amenable number.

55403250440 is an abundant number, since it is smaller than the sum of its proper divisors (69254063140).

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

55403250440 is a wasteful number, since it uses less digits than its factorization.

55403250440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385081272 (or 1385081268 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

Adding to 55403250440 its reverse (4405230455), we get a palindrome (59808480895).

The spelling of 55403250440 in words is "fifty-five billion, four hundred three million, two hundred fifty thousand, four hundred forty".