4551002145 has 32 divisors (see below), whose sum is σ = 8243337600. Its totient is φ = 2381401152.

The previous prime is 4551002129. The next prime is 4551002149. The reversal of 4551002145 is 5412001554.

4551002145 is a `hidden beast` number, since 4 + 5 + 510 + 0 + 2 + 145 = 666.

4551002145 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4551002145 - 2⁴ = 4551002129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4551002149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 310875 + ... + 325184.

It is an arithmetic number, because the mean of its divisors is an integer number (257604300).

Almost surely, 2^4551002145 is an apocalyptic number.

4551002145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4551002145 is a deficient number, since it is larger than the sum of its proper divisors (3692335455).

4551002145 is a wasteful number, since it uses less digits than its factorization.

4551002145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636126 (or 636120 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 4551002145 is about 67461.1158001408. The cubic root of 4551002145 is about 1657.1774438364.

Adding to 4551002145 its reverse (5412001554), we get a palindrome (9963003699).

The spelling of 4551002145 in words is "four billion, five hundred fifty-one million, two thousand, one hundred forty-five".