145247283 has 32 divisors (see below), whose sum is σ = 226324800. Its totient is φ = 91929600.

The previous prime is 145247279. The next prime is 145247299. The reversal of 145247283 is 382742541.

It is a happy number.

It is not a de Polignac number, because 145247283 - 2² = 145247279 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145247213) 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 31 ways as a sum of consecutive naturals, for example, 46243 + ... + 49283.

It is an arithmetic number, because the mean of its divisors is an integer number (7072650).

Almost surely, 2^145247283 is an apocalyptic number.

145247283 is a deficient number, since it is larger than the sum of its proper divisors (81077517).

145247283 is a wasteful number, since it uses less digits than its factorization.

145247283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140 (or 3134 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 145247283 is about 12051.8580725131. The cubic root of 145247283 is about 525.6572665966.

It can be divided in two parts, 145247 and 283, that added together give a triangular number (145530 = T₅₃₉).

The spelling of 145247283 in words is "one hundred forty-five million, two hundred forty-seven thousand, two hundred eighty-three".