145285252 has 24 divisors (see below), whose sum is σ = 290909696. Its totient is φ = 62192448.

The previous prime is 145285223. The next prime is 145285271. The reversal of 145285252 is 252582541.

It is a super-2 number, since 2×145285252² = 42215608897407008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26413 + ... + 31435.

Almost surely, 2^145285252 is an apocalyptic number.

It is an amenable number.

145285252 is an abundant number, since it is smaller than the sum of its proper divisors (145624444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145285252 is a wasteful number, since it uses less digits than its factorization.

145285252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6067 (or 6065 counting only the distinct ones).

The product of its digits is 32000, while the sum is 34.

The square root of 145285252 is about 12053.4332038635. The cubic root of 145285252 is about 525.7030665167.

The spelling of 145285252 in words is "one hundred forty-five million, two hundred eighty-five thousand, two hundred fifty-two".