145445747 has 2 divisors, whose sum is σ = 145445748. Its totient is φ = 145445746.

The previous prime is 145445743. The next prime is 145445753. The reversal of 145445747 is 747544541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145445747 - 2² = 145445743 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145445743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72722873 + 72722874.

It is an arithmetic number, because the mean of its divisors is an integer number (72722874).

Almost surely, 2^145445747 is an apocalyptic number.

145445747 is a deficient number, since it is larger than the sum of its proper divisors (1).

145445747 is an equidigital number, since it uses as much as digits as its factorization.

145445747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313600, while the sum is 41.

The square root of 145445747 is about 12060.0890129385. The cubic root of 145445747 is about 525.8965747199.

The spelling of 145445747 in words is "one hundred forty-five million, four hundred forty-five thousand, seven hundred forty-seven".