166054553 has 8 divisors (see below), whose sum is σ = 190041408. Its totient is φ = 142133904.

The previous prime is 166054513. The next prime is 166054579. The reversal of 166054553 is 355450661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166054553 - 2⁶ = 166054489 is a prime.

It is a super-2 number, since 2×166054553² = 55148229144059618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166054513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11051 + ... + 21312.

It is an arithmetic number, because the mean of its divisors is an integer number (23755176).

Almost surely, 2^166054553 is an apocalyptic number.

It is an amenable number.

166054553 is a deficient number, since it is larger than the sum of its proper divisors (23986855).

166054553 is an equidigital number, since it uses as much as digits as its factorization.

166054553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33103.

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 166054553 is about 12886.2156198009. The cubic root of 166054553 is about 549.6466634127.

The spelling of 166054553 in words is "one hundred sixty-six million, fifty-four thousand, five hundred fifty-three".