145747544 has 32 divisors (see below), whose sum is σ = 280711200. Its totient is φ = 70917120.

The previous prime is 145747543. The next prime is 145747549. The reversal of 145747544 is 445747541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145747543) 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, 45797 + ... + 48875.

It is an arithmetic number, because the mean of its divisors is an integer number (8772225).

Almost surely, 2^145747544 is an apocalyptic number.

It is an amenable number.

145747544 is a deficient number, since it is larger than the sum of its proper divisors (134963656).

145747544 is a wasteful number, since it uses less digits than its factorization.

145747544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3239 counting only the distinct ones).

The product of its digits is 313600, while the sum is 41.

The square root of 145747544 is about 12072.5947500941. The cubic root of 145747544 is about 526.2600650294.

The spelling of 145747544 in words is "one hundred forty-five million, seven hundred forty-seven thousand, five hundred forty-four".