145526257 has 2 divisors, whose sum is σ = 145526258. Its totient is φ = 145526256.

The previous prime is 145526243. The next prime is 145526279. The reversal of 145526257 is 752625541.

145526257 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., 141348321 + 4177936 = 11889^2 + 2044^2 .

It is an emirp because it is prime and its reverse (752625541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145526257 - 2¹¹ = 145524209 is a prime.

It is not a weakly prime, because it can be changed into another prime (145526657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72763128 + 72763129.

It is an arithmetic number, because the mean of its divisors is an integer number (72763129).

Almost surely, 2^145526257 is an apocalyptic number.

It is an amenable number.

145526257 is a deficient number, since it is larger than the sum of its proper divisors (1).

145526257 is an equidigital number, since it uses as much as digits as its factorization.

145526257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84000, while the sum is 37.

The square root of 145526257 is about 12063.4264203832. The cubic root of 145526257 is about 525.9935917044.

The spelling of 145526257 in words is "one hundred forty-five million, five hundred twenty-six thousand, two hundred fifty-seven".