145522166 has 4 divisors (see below), whose sum is σ = 218283252. Its totient is φ = 72761082.

The previous prime is 145522163. The next prime is 145522183. The reversal of 145522166 is 661225541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661225541 = 1259 ⋅525199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145522163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36380540 + ... + 36380543.

It is an arithmetic number, because the mean of its divisors is an integer number (54570813).

Almost surely, 2^145522166 is an apocalyptic number.

145522166 is a deficient number, since it is larger than the sum of its proper divisors (72761086).

145522166 is an equidigital number, since it uses as much as digits as its factorization.

145522166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72761085.

The product of its digits is 14400, while the sum is 32.

The square root of 145522166 is about 12063.2568570847. The cubic root of 145522166 is about 525.9886627887.

The spelling of 145522166 in words is "one hundred forty-five million, five hundred twenty-two thousand, one hundred sixty-six".