145212097 has 2 divisors, whose sum is σ = 145212098. Its totient is φ = 145212096.

The previous prime is 145212071. The next prime is 145212131. The reversal of 145212097 is 790212541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144937521 + 274576 = 12039^2 + 524^2 .

It is a cyclic number.

It is not a de Polignac number, because 145212097 - 2¹¹ = 145210049 is a prime.

It is not a weakly prime, because it can be changed into another prime (145212047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72606048 + 72606049.

It is an arithmetic number, because the mean of its divisors is an integer number (72606049).

Almost surely, 2^145212097 is an apocalyptic number.

It is an amenable number.

145212097 is a deficient number, since it is larger than the sum of its proper divisors (1).

145212097 is an equidigital number, since it uses as much as digits as its factorization.

145212097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 145212097 is about 12050.3982091879. The cubic root of 145212097 is about 525.6148165304.

The spelling of 145212097 in words is "one hundred forty-five million, two hundred twelve thousand, ninety-seven".