55513223450 has 24 divisors (see below), whose sum is σ = 103351285020. Its totient is φ = 22184496000.

The previous prime is 55513223431. The next prime is 55513223489. The reversal of 55513223450 is 5432231555.

It can be written as a sum of positive squares in 6 ways, for example, as 14166474529 + 41346748921 = 119023^2 + 203339^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55513223450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 465851 + ... + 572750.

Almost surely, 2^55513223450 is an apocalyptic number.

55513223450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55513223450 is a deficient number, since it is larger than the sum of its proper divisors (47838061570).

55513223450 is a wasteful number, since it uses less digits than its factorization.

55513223450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039682 (or 1039677 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 55513223450 in words is "fifty-five billion, five hundred thirteen million, two hundred twenty-three thousand, four hundred fifty".