145497641 has 2 divisors, whose sum is σ = 145497642. Its totient is φ = 145497640.

The previous prime is 145497631. The next prime is 145497683. The reversal of 145497641 is 146794541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134073241 + 11424400 = 11579^2 + 3380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145497641 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145497631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72748820 + 72748821.

It is an arithmetic number, because the mean of its divisors is an integer number (72748821).

Almost surely, 2^145497641 is an apocalyptic number.

It is an amenable number.

145497641 is a deficient number, since it is larger than the sum of its proper divisors (1).

145497641 is an equidigital number, since it uses as much as digits as its factorization.

145497641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 145497641 is about 12062.2402977225. The cubic root of 145497641 is about 525.9591126589.

The spelling of 145497641 in words is "one hundred forty-five million, four hundred ninety-seven thousand, six hundred forty-one".