145145837 has 2 divisors, whose sum is σ = 145145838. Its totient is φ = 145145836.

The previous prime is 145145717. The next prime is 145145867. The reversal of 145145837 is 738541541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119552356 + 25593481 = 10934^2 + 5059^2 .

It is an emirp because it is prime and its reverse (738541541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145145837 - 2²⁴ = 128368621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145145837.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145145867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72572918 + 72572919.

It is an arithmetic number, because the mean of its divisors is an integer number (72572919).

Almost surely, 2^145145837 is an apocalyptic number.

It is an amenable number.

145145837 is a deficient number, since it is larger than the sum of its proper divisors (1).

145145837 is an equidigital number, since it uses as much as digits as its factorization.

145145837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 145145837 is about 12047.6486087535. The cubic root of 145145837 is about 525.5348586917.

The spelling of 145145837 in words is "one hundred forty-five million, one hundred forty-five thousand, eight hundred thirty-seven".