4001466521 has 4 divisors (see below), whose sum is σ = 4309271652. Its totient is φ = 3693661392.

The previous prime is 4001466517. The next prime is 4001466541. The reversal of 4001466521 is 1256641004.

4001466521 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1854163600 + 2147302921 = 43060^2 + 46339^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001466521 - 2² = 4001466517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4001466541) 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, 153902546 + ... + 153902571.

It is an arithmetic number, because the mean of its divisors is an integer number (1077317913).

Almost surely, 2^4001466521 is an apocalyptic number.

It is an amenable number.

4001466521 is a deficient number, since it is larger than the sum of its proper divisors (307805131).

4001466521 is a wasteful number, since it uses less digits than its factorization.

4001466521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307805130.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 4001466521 is about 63257.1460073880. The cubic root of 4001466521 is about 1587.5950246796.

It can be divided in two parts, 400 and 1466521, that multiplied together give a square (586608400 = 24220²).

The spelling of 4001466521 in words is "four billion, one million, four hundred sixty-six thousand, five hundred twenty-one".