145504097 has 4 divisors (see below), whose sum is σ = 145556736. Its totient is φ = 145451460.

The previous prime is 145504067. The next prime is 145504103. The reversal of 145504097 is 790405541.

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, and also an emirpimes, since its reverse is a distinct semiprime: 790405541 = 1229 ⋅643129.

It is a cyclic number.

It is not a de Polignac number, because 145504097 - 2¹⁶ = 145438561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145504067) 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 3 ways as a sum of consecutive naturals, for example, 21929 + ... + 27782.

It is an arithmetic number, because the mean of its divisors is an integer number (36389184).

Almost surely, 2^145504097 is an apocalyptic number.

It is an amenable number.

145504097 is a deficient number, since it is larger than the sum of its proper divisors (52639).

145504097 is an equidigital number, since it uses as much as digits as its factorization.

145504097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52638.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 145504097 is about 12062.5079067332. The cubic root of 145504097 is about 525.9668918040.

The spelling of 145504097 in words is "one hundred forty-five million, five hundred four thousand, ninety-seven".