145452257 has 2 divisors, whose sum is σ = 145452258. Its totient is φ = 145452256.

The previous prime is 145452247. The next prime is 145452301. The reversal of 145452257 is 752254541.

145452257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83923921 + 61528336 = 9161^2 + 7844^2 .

It is a cyclic number.

It is not a de Polignac number, because 145452257 - 2¹⁶ = 145386721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145452247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72726128 + 72726129.

It is an arithmetic number, because the mean of its divisors is an integer number (72726129).

Almost surely, 2^145452257 is an apocalyptic number.

It is an amenable number.

145452257 is a deficient number, since it is larger than the sum of its proper divisors (1).

145452257 is an equidigital number, since it uses as much as digits as its factorization.

145452257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56000, while the sum is 35.

The square root of 145452257 is about 12060.3589084239. The cubic root of 145452257 is about 525.9044207969.

The spelling of 145452257 in words is "one hundred forty-five million, four hundred fifty-two thousand, two hundred fifty-seven".