551545503 has 8 divisors (see below), whose sum is σ = 738049968. Its totient is φ = 366369024.

The previous prime is 551545493. The next prime is 551545523. The reversal of 551545503 is 305545155.

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

It is not a de Polignac number, because 551545503 - 2⁴ = 551545487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551545523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331026 + ... + 332687.

It is an arithmetic number, because the mean of its divisors is an integer number (92256246).

Almost surely, 2^551545503 is an apocalyptic number.

551545503 is a deficient number, since it is larger than the sum of its proper divisors (186504465).

551545503 is a wasteful number, since it uses less digits than its factorization.

551545503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663993.

The product of its (nonzero) digits is 37500, while the sum is 33.

The square root of 551545503 is about 23485.0059186707. The cubic root of 551545503 is about 820.0879853041.

The spelling of 551545503 in words is "five hundred fifty-one million, five hundred forty-five thousand, five hundred three".