145301545 has 4 divisors (see below), whose sum is σ = 174361860. Its totient is φ = 116241232.

The previous prime is 145301521. The next prime is 145301549. The reversal of 145301545 is 545103541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545103541 = 1181 ⋅461561.

It can be written as a sum of positive squares in 2 ways, for example, as 36808489 + 108493056 = 6067^2 + 10416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145301545 is a prime.

It is a super-2 number, since 2×145301545² = 42225077958774050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145301549) 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, 14530150 + ... + 14530159.

It is an arithmetic number, because the mean of its divisors is an integer number (43590465).

Almost surely, 2^145301545 is an apocalyptic number.

It is an amenable number.

145301545 is a deficient number, since it is larger than the sum of its proper divisors (29060315).

145301545 is an equidigital number, since it uses as much as digits as its factorization.

145301545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29060314.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 145301545 is about 12054.1090504442. The cubic root of 145301545 is about 525.7227174213.

The spelling of 145301545 in words is "one hundred forty-five million, three hundred one thousand, five hundred forty-five".