5545145251 has 4 divisors (see below), whose sum is σ = 5551397712. Its totient is φ = 5538892792.

The previous prime is 5545145237. The next prime is 5545145273. The reversal of 5545145251 is 1525415455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5545145251 - 2¹¹ = 5545143203 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 5545145251.

It is not an unprimeable number, because it can be changed into a prime (5545146251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3124900 + ... + 3126673.

It is an arithmetic number, because the mean of its divisors is an integer number (1387849428).

Almost surely, 2^5545145251 is an apocalyptic number.

5545145251 is a deficient number, since it is larger than the sum of its proper divisors (6252461).

5545145251 is an equidigital number, since it uses as much as digits as its factorization.

5545145251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252460.

The product of its digits is 100000, while the sum is 37.

The square root of 5545145251 is about 74465.7320584442. The cubic root of 5545145251 is about 1769.9906636596.

The spelling of 5545145251 in words is "five billion, five hundred forty-five million, one hundred forty-five thousand, two hundred fifty-one".