145000049 has 2 divisors, whose sum is σ = 145000050. Its totient is φ = 145000048.

The previous prime is 145000043. The next prime is 145000057. The reversal of 145000049 is 940000541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144600625 + 399424 = 12025^2 + 632^2 .

It is a cyclic number.

It is not a de Polignac number, because 145000049 - 2⁴ = 145000033 is a prime.

It is a super-3 number, since 3×145000049³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 144999988 and 145000033.

It is not a weakly prime, because it can be changed into another prime (145000043) 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 as a sum of consecutive naturals, namely, 72500024 + 72500025.

It is an arithmetic number, because the mean of its divisors is an integer number (72500025).

Almost surely, 2^145000049 is an apocalyptic number.

It is an amenable number.

145000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

145000049 is an equidigital number, since it uses as much as digits as its factorization.

145000049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 145000049 is about 12041.5966134064. The cubic root of 145000049 is about 525.3588464276.

The spelling of 145000049 in words is "one hundred forty-five million, forty-nine", and thus it is an aban number.