145534657 has 2 divisors, whose sum is σ = 145534658. Its totient is φ = 145534656.

The previous prime is 145534619. The next prime is 145534663. The reversal of 145534657 is 756435541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79014321 + 66520336 = 8889^2 + 8156^2 .

It is an emirp because it is prime and its reverse (756435541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145534657 is a prime.

It is not a weakly prime, because it can be changed into another prime (145534667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72767328 + 72767329.

It is an arithmetic number, because the mean of its divisors is an integer number (72767329).

Almost surely, 2^145534657 is an apocalyptic number.

It is an amenable number.

145534657 is a deficient number, since it is larger than the sum of its proper divisors (1).

145534657 is an equidigital number, since it uses as much as digits as its factorization.

145534657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 40.

The square root of 145534657 is about 12063.7745751485. The cubic root of 145534657 is about 526.0037118968.

The spelling of 145534657 in words is "one hundred forty-five million, five hundred thirty-four thousand, six hundred fifty-seven".