145257145 has 8 divisors (see below), whose sum is σ = 190154880. Its totient is φ = 105641520.

The previous prime is 145257131. The next prime is 145257149. The reversal of 145257145 is 541752541.

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

It is not a de Polignac number, because 145257145 - 2¹³ = 145248953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145257145.

It is not an unprimeable number, because it can be changed into a prime (145257149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1320465 + ... + 1320574.

It is an arithmetic number, because the mean of its divisors is an integer number (23769360).

Almost surely, 2^145257145 is an apocalyptic number.

It is an amenable number.

145257145 is a deficient number, since it is larger than the sum of its proper divisors (44897735).

145257145 is a wasteful number, since it uses less digits than its factorization.

145257145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641055.

The product of its digits is 28000, while the sum is 34.

The square root of 145257145 is about 12052.2672140971. The cubic root of 145257145 is about 525.6691633530.

The spelling of 145257145 in words is "one hundred forty-five million, two hundred fifty-seven thousand, one hundred forty-five".