145000249 has 2 divisors, whose sum is σ = 145000250. Its totient is φ = 145000248.

The previous prime is 145000243. The next prime is 145000277. The reversal of 145000249 is 942000541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 2913849 = 11920^2 + 1707^2 .

It is a cyclic number.

It is not a de Polignac number, because 145000249 - 2⁹ = 144999737 is a prime.

It is not a weakly prime, because it can be changed into another prime (145000243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72500124 + 72500125.

It is an arithmetic number, because the mean of its divisors is an integer number (72500125).

Almost surely, 2^145000249 is an apocalyptic number.

It is an amenable number.

145000249 is a deficient number, since it is larger than the sum of its proper divisors (1).

145000249 is an equidigital number, since it uses as much as digits as its factorization.

145000249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 145000249 is about 12041.6049179501. The cubic root of 145000249 is about 525.3590879717.

The spelling of 145000249 in words is "one hundred forty-five million, two hundred forty-nine", and thus it is an aban number.