166533530 has 32 divisors (see below), whose sum is σ = 318039696. Its totient is φ = 62567424.

The previous prime is 166533517. The next prime is 166533551. The reversal of 166533530 is 35335661.

It can be written as a sum of positive squares in 8 ways, for example, as 79727041 + 86806489 = 8929^2 + 9317^2 .

It is a super-2 number, since 2×166533530² = 55466833228521800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148532 + ... + 149648.

Almost surely, 2^166533530 is an apocalyptic number.

166533530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166533530 is a deficient number, since it is larger than the sum of its proper divisors (151506166).

166533530 is a wasteful number, since it uses less digits than its factorization.

166533530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2018.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 166533530 is about 12904.7870962678. The cubic root of 166533530 is about 550.1746332507.

The spelling of 166533530 in words is "one hundred sixty-six million, five hundred thirty-three thousand, five hundred thirty".