145237049 has 2 divisors, whose sum is σ = 145237050. Its totient is φ = 145237048.

The previous prime is 145237031. The next prime is 145237093. The reversal of 145237049 is 940732541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106399225 + 38837824 = 10315^2 + 6232^2 .

It is a cyclic number.

It is not a de Polignac number, because 145237049 - 2¹² = 145232953 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145237009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72618524 + 72618525.

It is an arithmetic number, because the mean of its divisors is an integer number (72618525).

Almost surely, 2^145237049 is an apocalyptic number.

It is an amenable number.

145237049 is a deficient number, since it is larger than the sum of its proper divisors (1).

145237049 is an equidigital number, since it uses as much as digits as its factorization.

145237049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 145237049 is about 12051.4334832002. The cubic root of 145237049 is about 525.6449205187.

The spelling of 145237049 in words is "one hundred forty-five million, two hundred thirty-seven thousand, forty-nine".