55209350553 has 16 divisors (see below), whose sum is σ = 84158279040. Its totient is φ = 31537046016.

The previous prime is 55209350531. The next prime is 55209350563. The reversal of 55209350553 is 35505390255.

It is a de Polignac number, because none of the positive numbers 2^k-55209350553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55209350563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403768 + ... + 522921.

It is an arithmetic number, because the mean of its divisors is an integer number (5259892440).

Almost surely, 2^55209350553 is an apocalyptic number.

It is an amenable number.

55209350553 is a deficient number, since it is larger than the sum of its proper divisors (28948928487).

55209350553 is a wasteful number, since it uses less digits than its factorization.

55209350553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929536.

The product of its (nonzero) digits is 506250, while the sum is 42.

The spelling of 55209350553 in words is "fifty-five billion, two hundred nine million, three hundred fifty thousand, five hundred fifty-three".