145555438 has 8 divisors (see below), whose sum is σ = 249523632. Its totient is φ = 62380896.

The previous prime is 145555429. The next prime is 145555441. The reversal of 145555438 is 834555541.

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

It is a self number, because there is not a number n which added to its sum of digits gives 145555438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5198395 + ... + 5198422.

It is an arithmetic number, because the mean of its divisors is an integer number (31190454).

Almost surely, 2^145555438 is an apocalyptic number.

145555438 is a deficient number, since it is larger than the sum of its proper divisors (103968194).

145555438 is a wasteful number, since it uses less digits than its factorization.

145555438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10396826.

The product of its digits is 240000, while the sum is 40.

The square root of 145555438 is about 12064.6358419971. The cubic root of 145555438 is about 526.0287468567.

The spelling of 145555438 in words is "one hundred forty-five million, five hundred fifty-five thousand, four hundred thirty-eight".