145297033 has 4 divisors (see below), whose sum is σ = 166053760. Its totient is φ = 124540308.

The previous prime is 145297021. The next prime is 145297051. The reversal of 145297033 is 330792541.

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: 330792541 = 607 ⋅544963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145297033 is a prime.

It is a super-2 number, since 2×145297033² = 42222455597206178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145297033.

It is not an unprimeable number, because it can be changed into a prime (145297013) 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 3 ways as a sum of consecutive naturals, for example, 10378353 + ... + 10378366.

It is an arithmetic number, because the mean of its divisors is an integer number (41513440).

Almost surely, 2^145297033 is an apocalyptic number.

It is an amenable number.

145297033 is a deficient number, since it is larger than the sum of its proper divisors (20756727).

145297033 is an equidigital number, since it uses as much as digits as its factorization.

145297033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20756726.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 145297033 is about 12053.9218928944. The cubic root of 145297033 is about 525.7172756681.

The spelling of 145297033 in words is "one hundred forty-five million, two hundred ninety-seven thousand, thirty-three".