4166551 has 4 divisors (see below), whose sum is σ = 4178272. Its totient is φ = 4154832.

The previous prime is 4166531. The next prime is 4166557. The reversal of 4166551 is 1556614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1556614 = 2 ⋅778307.

It is a cyclic number.

It is not a de Polignac number, because 4166551 - 2²¹ = 2069399 is a prime.

It is a Duffinian number.

4166551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4166557) 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, 5310 + ... + 6043.

It is an arithmetic number, because the mean of its divisors is an integer number (1044568).

Almost surely, 2^4166551 is an apocalyptic number.

4166551 is a deficient number, since it is larger than the sum of its proper divisors (11721).

4166551 is a wasteful number, since it uses less digits than its factorization.

4166551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11720.

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

The square root of 4166551 is about 2041.2131196913. The cubic root of 4166551 is about 160.9134084213.

The spelling of 4166551 in words is "four million, one hundred sixty-six thousand, five hundred fifty-one".