145255144 has 32 divisors (see below), whose sum is σ = 276863400. Its totient is φ = 71435520.

The previous prime is 145255111. The next prime is 145255147. The reversal of 145255144 is 441552541.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 131102500 + 14152644 = 11450^2 + 3762^2 .

It is not an unprimeable number, because it can be changed into a prime (145255147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136374 + ... + 137434.

Almost surely, 2^145255144 is an apocalyptic number.

It is an amenable number.

145255144 is a deficient number, since it is larger than the sum of its proper divisors (131608256).

145255144 is a wasteful number, since it uses less digits than its factorization.

145255144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333 (or 1329 counting only the distinct ones).

The product of its digits is 16000, while the sum is 31.

The square root of 145255144 is about 12052.1842003846. The cubic root of 145255144 is about 525.6667495444. Note that the first 3 decimals are identical.

The spelling of 145255144 in words is "one hundred forty-five million, two hundred fifty-five thousand, one hundred forty-four".