145000253 has 4 divisors (see below), whose sum is σ = 146747328. Its totient is φ = 143253180.

The previous prime is 145000249. The next prime is 145000277. The reversal of 145000253 is 352000541.

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: 352000541 = 193 ⋅1823837.

It is a cyclic number.

It is not a de Polignac number, because 145000253 - 2² = 145000249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145000223) 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, 873413 + ... + 873578.

It is an arithmetic number, because the mean of its divisors is an integer number (36686832).

Almost surely, 2^145000253 is an apocalyptic number.

It is an amenable number.

145000253 is a deficient number, since it is larger than the sum of its proper divisors (1747075).

145000253 is an equidigital number, since it uses as much as digits as its factorization.

145000253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1747074.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 145000253 is about 12041.6050840409. The cubic root of 145000253 is about 525.3590928026.

Adding to 145000253 its reverse (352000541), we get a palindrome (497000794).

The spelling of 145000253 in words is "one hundred forty-five million, two hundred fifty-three", and thus it is an aban number.