166598053 has 4 divisors (see below), whose sum is σ = 166804288. Its totient is φ = 166391820.

The previous prime is 166598017. The next prime is 166598059. The reversal of 166598053 is 350895661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350895661 = 5741 ⋅61121.

It is a cyclic number.

It is not a de Polignac number, because 166598053 - 2¹³ = 166589861 is a prime.

It is a super-2 number, since 2×166598053² = 55509822526781618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166598059) 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, 101901 + ... + 103522.

It is an arithmetic number, because the mean of its divisors is an integer number (41701072).

Almost surely, 2^166598053 is an apocalyptic number.

It is an amenable number.

166598053 is a deficient number, since it is larger than the sum of its proper divisors (206235).

166598053 is an equidigital number, since it uses as much as digits as its factorization.

166598053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206234.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 166598053 is about 12907.2868179180. The cubic root of 166598053 is about 550.2456786716.

The spelling of 166598053 in words is "one hundred sixty-six million, five hundred ninety-eight thousand, fifty-three".