55201220459 has 32 divisors (see below), whose sum is σ = 71149241856. Its totient is φ = 41580241920.

The previous prime is 55201220453. The next prime is 55201220507. The reversal of 55201220459 is 95402210255.

It is not a de Polignac number, because 55201220459 - 2³² = 50906253163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55201220453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235229 + ... + 407105.

It is an arithmetic number, because the mean of its divisors is an integer number (2223413808).

Almost surely, 2^55201220459 is an apocalyptic number.

55201220459 is a deficient number, since it is larger than the sum of its proper divisors (15948021397).

55201220459 is a wasteful number, since it uses less digits than its factorization.

55201220459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172035.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 55201220459 in words is "fifty-five billion, two hundred one million, two hundred twenty thousand, four hundred fifty-nine".