145214897 has 2 divisors, whose sum is σ = 145214898. Its totient is φ = 145214896.

The previous prime is 145214869. The next prime is 145214903. The reversal of 145214897 is 798412541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134351281 + 10863616 = 11591^2 + 3296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145214897 is a prime.

It is not a weakly prime, because it can be changed into another prime (145214837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72607448 + 72607449.

It is an arithmetic number, because the mean of its divisors is an integer number (72607449).

Almost surely, 2^145214897 is an apocalyptic number.

It is an amenable number.

145214897 is a deficient number, since it is larger than the sum of its proper divisors (1).

145214897 is an equidigital number, since it uses as much as digits as its factorization.

145214897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 145214897 is about 12050.5143873612. The cubic root of 145214897 is about 525.6181948349.

The spelling of 145214897 in words is "one hundred forty-five million, two hundred fourteen thousand, eight hundred ninety-seven".