545534500251 has 8 divisors (see below), whose sum is σ = 783331590160. Its totient is φ = 335713538592.

The previous prime is 545534500243. The next prime is 545534500253. The reversal of 545534500251 is 152005435545.

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

It is not a de Polignac number, because 545534500251 - 2³ = 545534500243 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 13988064109 = 545534500251 / (5 + 4 + 5 + 5 + 3 + 4 + 5 + 0 + 0 + 2 + 5 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545534500253) 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 7 ways as a sum of consecutive naturals, for example, 6994032016 + ... + 6994032093.

It is an arithmetic number, because the mean of its divisors is an integer number (97916448770).

Almost surely, 2^545534500251 is an apocalyptic number.

545534500251 is a deficient number, since it is larger than the sum of its proper divisors (237797089909).

545534500251 is a wasteful number, since it uses less digits than its factorization.

545534500251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13988064125.

The product of its (nonzero) digits is 300000, while the sum is 39.

Adding to 545534500251 its reverse (152005435545), we get a palindrome (697539935796).

The spelling of 545534500251 in words is "five hundred forty-five billion, five hundred thirty-four million, five hundred thousand, two hundred fifty-one".