551205553 has 8 divisors (see below), whose sum is σ = 568231200. Its totient is φ = 534436128.

The previous prime is 551205547. The next prime is 551205607. The reversal of 551205553 is 355502155.

It is a happy number.

551205553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 551205553 - 2⁵ = 551205521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (551205503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59683 + ... + 68296.

It is an arithmetic number, because the mean of its divisors is an integer number (71028900).

Almost surely, 2^551205553 is an apocalyptic number.

It is an amenable number.

551205553 is a deficient number, since it is larger than the sum of its proper divisors (17025647).

551205553 is a wasteful number, since it uses less digits than its factorization.

551205553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128111.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 551205553 is about 23477.7672064445. The cubic root of 551205553 is about 819.9194611559.

The spelling of 551205553 in words is "five hundred fifty-one million, two hundred five thousand, five hundred fifty-three".