145152253 has 4 divisors (see below), whose sum is σ = 145176480. Its totient is φ = 145128028.

The previous prime is 145152193. The next prime is 145152263. The reversal of 145152253 is 352251541.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 352251541 = 41 ⋅8591501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145152253 is a prime.

It is a Duffinian number.

It is a zygodrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145152263) 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, 4176 + ... + 17542.

It is an arithmetic number, because the mean of its divisors is an integer number (36294120).

Almost surely, 2^145152253 is an apocalyptic number.

It is an amenable number.

145152253 is a deficient number, since it is larger than the sum of its proper divisors (24227).

145152253 is a wasteful number, since it uses less digits than its factorization.

145152253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24226.

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

The square root of 145152253 is about 12047.9148818374. The cubic root of 145152253 is about 525.5426021265.

The spelling of 145152253 in words is "one hundred forty-five million, one hundred fifty-two thousand, two hundred fifty-three".