166012501 has 16 divisors (see below), whose sum is σ = 175348800. Its totient is φ = 156956800.

The previous prime is 166012487. The next prime is 166012523. The reversal of 166012501 is 105210661.

166012501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166012501 - 2¹³ = 166004309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166022501) 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, 337866 + ... + 338356.

It is an arithmetic number, because the mean of its divisors is an integer number (10959300).

Almost surely, 2^166012501 is an apocalyptic number.

It is an amenable number.

166012501 is a deficient number, since it is larger than the sum of its proper divisors (9336299).

166012501 is a wasteful number, since it uses less digits than its factorization.

166012501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 166012501 is about 12884.5838504781. The cubic root of 166012501 is about 549.6002616078.

It can be divided in two parts, 1660 and 12501, that added together give a square (14161 = 119²).

The spelling of 166012501 in words is "one hundred sixty-six million, twelve thousand, five hundred one".