145330252 has 24 divisors (see below), whose sum is σ = 264872160. Its totient is φ = 69686400.

The previous prime is 145330099. The next prime is 145330253. The reversal of 145330252 is 252033541.

It is a super-2 number, since 2×145330252² = 42241764292767008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145330253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13368 + ... + 21664.

It is an arithmetic number, because the mean of its divisors is an integer number (11036340).

Almost surely, 2^145330252 is an apocalyptic number.

It is an amenable number.

145330252 is a deficient number, since it is larger than the sum of its proper divisors (119541908).

145330252 is a wasteful number, since it uses less digits than its factorization.

145330252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8481 (or 8479 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 145330252 is about 12055.2997474140. The cubic root of 145330252 is about 525.7573372144.

Adding to 145330252 its reverse (252033541), we get a palindrome (397363793).

The spelling of 145330252 in words is "one hundred forty-five million, three hundred thirty thousand, two hundred fifty-two".