545121251 has 8 divisors (see below), whose sum is σ = 552895680. Its totient is φ = 537368832.

The previous prime is 545121209. The next prime is 545121253. The reversal of 545121251 is 152121545.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545121251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 545121251.

It is not an unprimeable number, because it can be changed into a prime (545121253) 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, 48041 + ... + 58293.

It is an arithmetic number, because the mean of its divisors is an integer number (69111960).

Almost surely, 2^545121251 is an apocalyptic number.

545121251 is a deficient number, since it is larger than the sum of its proper divisors (7774429).

545121251 is a wasteful number, since it uses less digits than its factorization.

545121251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11005.

The product of its digits is 2000, while the sum is 26.

The square root of 545121251 is about 23347.8318265316. The cubic root of 545121251 is about 816.8914884197.

Adding to 545121251 its reverse (152121545), we get a palindrome (697242796).

The spelling of 545121251 in words is "five hundred forty-five million, one hundred twenty-one thousand, two hundred fifty-one".