166253455 has 16 divisors (see below), whose sum is σ = 212673600. Its totient is φ = 124329472.

The previous prime is 166253443. The next prime is 166253459. The reversal of 166253455 is 554352661.

It is a cyclic number.

It is not a de Polignac number, because 166253455 - 2²¹ = 164156303 is a prime.

It is a super-2 number, since 2×166253455² = 55280422598874050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166253459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6102 + ... + 19228.

It is an arithmetic number, because the mean of its divisors is an integer number (13292100).

Almost surely, 2^166253455 is an apocalyptic number.

166253455 is a deficient number, since it is larger than the sum of its proper divisors (46420145).

166253455 is a wasteful number, since it uses less digits than its factorization.

166253455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13298.

The product of its digits is 108000, while the sum is 37.

The square root of 166253455 is about 12893.9309366849. The cubic root of 166253455 is about 549.8660334874.

The spelling of 166253455 in words is "one hundred sixty-six million, two hundred fifty-three thousand, four hundred fifty-five".