166120053 has 48 divisors (see below), whose sum is σ = 257862528. Its totient is φ = 94864000.

The previous prime is 166120027. The next prime is 166120063. The reversal of 166120053 is 350021661.

It is not a de Polignac number, because 166120053 - 2¹⁰ = 166119029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166120063) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 843151 + ... + 843347.

It is an arithmetic number, because the mean of its divisors is an integer number (5372136).

Almost surely, 2^166120053 is an apocalyptic number.

It is an amenable number.

166120053 is a deficient number, since it is larger than the sum of its proper divisors (91742475).

166120053 is a wasteful number, since it uses less digits than its factorization.

166120053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 166120053 is about 12888.7568446301. The cubic root of 166120053 is about 549.7189230470.

The spelling of 166120053 in words is "one hundred sixty-six million, one hundred twenty thousand, fifty-three".