166551004 has 12 divisors (see below), whose sum is σ = 304136784. Its totient is φ = 79654784.

The previous prime is 166551001. The next prime is 166551029. The reversal of 166551004 is 400155661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166551001) 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, 905077 + ... + 905260.

It is an arithmetic number, because the mean of its divisors is an integer number (25344732).

Almost surely, 2^166551004 is an apocalyptic number.

It is an amenable number.

166551004 is a deficient number, since it is larger than the sum of its proper divisors (137585780).

166551004 is a wasteful number, since it uses less digits than its factorization.

166551004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810364 (or 1810362 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 166551004 is about 12905.4641140875. The cubic root of 166551004 is about 550.1938754524.

The spelling of 166551004 in words is "one hundred sixty-six million, five hundred fifty-one thousand, four".