145491395 has 16 divisors (see below), whose sum is σ = 200553408. Its totient is φ = 99254400.

The previous prime is 145491391. The next prime is 145491427. The reversal of 145491395 is 593194541.

145491395 = 4556² + 4557² + ... + 4562².

It is not a de Polignac number, because 145491395 - 2² = 145491391 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145491391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3656 + ... + 17445.

It is an arithmetic number, because the mean of its divisors is an integer number (12534588).

Almost surely, 2^145491395 is an apocalyptic number.

145491395 is a deficient number, since it is larger than the sum of its proper divisors (55062013).

145491395 is a wasteful number, since it uses less digits than its factorization.

145491395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21310.

The product of its digits is 97200, while the sum is 41.

The square root of 145491395 is about 12061.9813878152. The cubic root of 145491395 is about 525.9515863338.

The spelling of 145491395 in words is "one hundred forty-five million, four hundred ninety-one thousand, three hundred ninety-five".