145744547 has 8 divisors (see below), whose sum is σ = 162019200. Its totient is φ = 130193280.

The previous prime is 145744507. The next prime is 145744559. The reversal of 145744547 is 745447541.

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

It is a cyclic number.

It is not a de Polignac number, because 145744547 - 2²⁴ = 128967331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145744507) 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, 180422 + ... + 181227.

It is an arithmetic number, because the mean of its divisors is an integer number (20252400).

Almost surely, 2^145744547 is an apocalyptic number.

145744547 is a deficient number, since it is larger than the sum of its proper divisors (16274653).

145744547 is a wasteful number, since it uses less digits than its factorization.

145744547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361693.

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

The square root of 145744547 is about 12072.4706253525. The cubic root of 145744547 is about 526.2564578509.

The spelling of 145744547 in words is "one hundred forty-five million, seven hundred forty-four thousand, five hundred forty-seven".