4015045521 has 12 divisors (see below), whose sum is σ = 5897807760. Its totient is φ = 2631328920.

The previous prime is 4015045483. The next prime is 4015045543. The reversal of 4015045521 is 1255405104.

4015045521 is a `hidden beast` number, since 40 + 150 + 455 + 21 = 666.

It is not a de Polignac number, because 4015045521 - 2⁶ = 4015045457 is a prime.

It is a super-2 number, since 2×4015045521² = 32241181071404322882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4015045421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3780115 + ... + 3781176.

It is an arithmetic number, because the mean of its divisors is an integer number (491483980).

Almost surely, 2^4015045521 is an apocalyptic number.

It is an amenable number.

4015045521 is a deficient number, since it is larger than the sum of its proper divisors (1882762239).

4015045521 is a wasteful number, since it uses less digits than its factorization.

4015045521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561356 (or 7561353 counting only the distinct ones).

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

The square root of 4015045521 is about 63364.3868509749. The cubic root of 4015045521 is about 1589.3888347671.

The spelling of 4015045521 in words is "four billion, fifteen million, forty-five thousand, five hundred twenty-one".