145205747 has 2 divisors, whose sum is σ = 145205748. Its totient is φ = 145205746.

The previous prime is 145205717. The next prime is 145205773. The reversal of 145205747 is 747502541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145205747 - 2¹⁶ = 145140211 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145205717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72602873 + 72602874.

It is an arithmetic number, because the mean of its divisors is an integer number (72602874).

Almost surely, 2^145205747 is an apocalyptic number.

145205747 is a deficient number, since it is larger than the sum of its proper divisors (1).

145205747 is an equidigital number, since it uses as much as digits as its factorization.

145205747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 145205747 is about 12050.1347295373. The cubic root of 145205747 is about 525.6071548576.

The spelling of 145205747 in words is "one hundred forty-five million, two hundred five thousand, seven hundred forty-seven".