145057397 has 2 divisors, whose sum is σ = 145057398. Its totient is φ = 145057396.

The previous prime is 145057373. The next prime is 145057403. The reversal of 145057397 is 793750541.

145057397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129367876 + 15689521 = 11374^2 + 3961^2 .

It is a cyclic number.

It is not a de Polignac number, because 145057397 - 2¹² = 145053301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145057327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72528698 + 72528699.

It is an arithmetic number, because the mean of its divisors is an integer number (72528699).

Almost surely, 2^145057397 is an apocalyptic number.

It is an amenable number.

145057397 is a deficient number, since it is larger than the sum of its proper divisors (1).

145057397 is an equidigital number, since it uses as much as digits as its factorization.

145057397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 145057397 is about 12043.9776236923. The cubic root of 145057397 is about 525.4280976871.

The spelling of 145057397 in words is "one hundred forty-five million, fifty-seven thousand, three hundred ninety-seven".