4023521545 has 8 divisors (see below), whose sum is σ = 4835692224. Its totient is φ = 3213839664.

The previous prime is 4023521539. The next prime is 4023521569. The reversal of 4023521545 is 5451253204.

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

It is a cyclic number.

It is not a de Polignac number, because 4023521545 - 2¹⁷ = 4023390473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618639 + ... + 625108.

It is an arithmetic number, because the mean of its divisors is an integer number (604461528).

Almost surely, 2^4023521545 is an apocalyptic number.

It is an amenable number.

4023521545 is a deficient number, since it is larger than the sum of its proper divisors (812170679).

4023521545 is a wasteful number, since it uses less digits than its factorization.

4023521545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244399.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 4023521545 is about 63431.2347743602. The cubic root of 4023521545 is about 1590.5064832937.

Adding to 4023521545 its reverse (5451253204), we get a palindrome (9474774749).

The spelling of 4023521545 in words is "four billion, twenty-three million, five hundred twenty-one thousand, five hundred forty-five".