145748297 has 4 divisors (see below), whose sum is σ = 153419280. Its totient is φ = 138077316.

The previous prime is 145748279. The next prime is 145748299. The reversal of 145748297 is 792847541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145748297 - 2²⁰ = 144699721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145748299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835463 + ... + 3835500.

It is an arithmetic number, because the mean of its divisors is an integer number (38354820).

Almost surely, 2^145748297 is an apocalyptic number.

It is an amenable number.

145748297 is a deficient number, since it is larger than the sum of its proper divisors (7670983).

145748297 is an equidigital number, since it uses as much as digits as its factorization.

145748297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7670982.

The product of its digits is 564480, while the sum is 47.

The square root of 145748297 is about 12072.6259363901. The cubic root of 145748297 is about 526.2609713298.

The spelling of 145748297 in words is "one hundred forty-five million, seven hundred forty-eight thousand, two hundred ninety-seven".