145265144 has 16 divisors (see below), whose sum is σ = 272602800. Its totient is φ = 72571072.

The previous prime is 145265143. The next prime is 145265201. The reversal of 145265144 is 441562541.

It is a super-2 number, since 2×145265144² = 42203924122681472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145265144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145265143) 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, 3269 + ... + 17355.

It is an arithmetic number, because the mean of its divisors is an integer number (17037675).

Almost surely, 2^145265144 is an apocalyptic number.

It is an amenable number.

145265144 is a deficient number, since it is larger than the sum of its proper divisors (127337656).

145265144 is a wasteful number, since it uses less digits than its factorization.

145265144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15382 (or 15378 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 145265144 is about 12052.5990558053. The cubic root of 145265144 is about 525.6788123344.

The spelling of 145265144 in words is "one hundred forty-five million, two hundred sixty-five thousand, one hundred forty-four".