145355243 has 6 divisors (see below), whose sum is σ = 159770772. Its totient is φ = 132141020.

The previous prime is 145355237. The next prime is 145355269. The reversal of 145355243 is 342553541.

It is a happy number.

It is not a de Polignac number, because 145355243 - 2⁸ = 145354987 is a prime.

It is a super-2 number, since 2×145355243² = 42256293335178098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145355233) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600521 + ... + 600762.

It is an arithmetic number, because the mean of its divisors is an integer number (26628462).

Almost surely, 2^145355243 is an apocalyptic number.

145355243 is a deficient number, since it is larger than the sum of its proper divisors (14415529).

145355243 is a wasteful number, since it uses less digits than its factorization.

145355243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201305 (or 1201294 counting only the distinct ones).

The product of its digits is 36000, while the sum is 32.

The square root of 145355243 is about 12056.3362179395. The cubic root of 145355243 is about 525.7874719096.

The spelling of 145355243 in words is "one hundred forty-five million, three hundred fifty-five thousand, two hundred forty-three".