145745538 has 8 divisors (see below), whose sum is σ = 291491088. Its totient is φ = 48581844.

The previous prime is 145745527. The next prime is 145745591. The reversal of 145745538 is 835547541.

It is a happy number.

145745538 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

145745538 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 145745538.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12145456 + ... + 12145467.

It is an arithmetic number, because the mean of its divisors is an integer number (36436386).

Almost surely, 2^145745538 is an apocalyptic number.

145745538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145745538 is a wasteful number, since it uses less digits than its factorization.

145745538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24290928.

The product of its digits is 336000, while the sum is 42.

The square root of 145745538 is about 12072.5116690770. The cubic root of 145745538 is about 526.2576506205.

The spelling of 145745538 in words is "one hundred forty-five million, seven hundred forty-five thousand, five hundred thirty-eight".