551320501 has 8 divisors (see below), whose sum is σ = 573392864. Its totient is φ = 529668720.

The previous prime is 551320499. The next prime is 551320529. The reversal of 551320501 is 105023155.

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 551320501 - 2¹ = 551320499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (551320531) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 102471 + ... + 107716.

It is an arithmetic number, because the mean of its divisors is an integer number (71674108).

Almost surely, 2^551320501 is an apocalyptic number.

It is an amenable number.

551320501 is a deficient number, since it is larger than the sum of its proper divisors (22072363).

551320501 is a wasteful number, since it uses less digits than its factorization.

551320501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210291.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 551320501 is about 23480.2150969705. The cubic root of 551320501 is about 819.9764523280.

Adding to 551320501 its reverse (105023155), we get a palindrome (656343656).

The spelling of 551320501 in words is "five hundred fifty-one million, three hundred twenty thousand, five hundred one".