4509529121 has 4 divisors (see below), whose sum is σ = 4510810500. Its totient is φ = 4508247744.

The previous prime is 4509529117. The next prime is 4509529139. The reversal of 4509529121 is 1219259054.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1184392225 + 3325136896 = 34415^2 + 57664^2 .

It is a cyclic number.

It is not a de Polignac number, because 4509529121 - 2² = 4509529117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4509529151) 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, 635396 + ... + 642453.

It is an arithmetic number, because the mean of its divisors is an integer number (1127702625).

Almost surely, 2^4509529121 is an apocalyptic number.

It is an amenable number.

4509529121 is a deficient number, since it is larger than the sum of its proper divisors (1281379).

4509529121 is a wasteful number, since it uses less digits than its factorization.

4509529121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281378.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 4509529121 is about 67153.0276383723. The cubic root of 4509529121 is about 1652.1281533676.

The spelling of 4509529121 in words is "four billion, five hundred nine million, five hundred twenty-nine thousand, one hundred twenty-one".