145121566 has 8 divisors (see below), whose sum is σ = 217749744. Its totient is φ = 72538320.

The previous prime is 145121521. The next prime is 145121567. The reversal of 145121566 is 665121541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145121567) 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, 1455 + ... + 17098.

It is an arithmetic number, because the mean of its divisors is an integer number (27218718).

Almost surely, 2^145121566 is an apocalyptic number.

145121566 is a deficient number, since it is larger than the sum of its proper divisors (72628178).

145121566 is a wasteful number, since it uses less digits than its factorization.

145121566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22466.

The product of its digits is 7200, while the sum is 31.

The square root of 145121566 is about 12046.6412746458. The cubic root of 145121566 is about 525.5055640920.

The spelling of 145121566 in words is "one hundred forty-five million, one hundred twenty-one thousand, five hundred sixty-six".