166460521 has 16 divisors (see below), whose sum is σ = 175399488. Its totient is φ = 157809600.

The previous prime is 166460479. The next prime is 166460543. The reversal of 166460521 is 125064661.

It is a cyclic number.

It is not a de Polignac number, because 166460521 - 2¹¹ = 166458473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166460561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295386 + ... + 295948.

It is an arithmetic number, because the mean of its divisors is an integer number (10962468).

Almost surely, 2^166460521 is an apocalyptic number.

It is an amenable number.

166460521 is a deficient number, since it is larger than the sum of its proper divisors (8938967).

166460521 is a wasteful number, since it uses less digits than its factorization.

166460521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 166460521 is about 12901.9580296946. The cubic root of 166460521 is about 550.0942218742.

The spelling of 166460521 in words is "one hundred sixty-six million, four hundred sixty thousand, five hundred twenty-one".