145250557 has 2 divisors, whose sum is σ = 145250558. Its totient is φ = 145250556.

The previous prime is 145250549. The next prime is 145250579. The reversal of 145250557 is 755052541.

145250557 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., 115154361 + 30096196 = 10731^2 + 5486^2 .

It is a cyclic number.

It is not a de Polignac number, because 145250557 - 2³ = 145250549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145250527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72625278 + 72625279.

It is an arithmetic number, because the mean of its divisors is an integer number (72625279).

Almost surely, 2^145250557 is an apocalyptic number.

It is an amenable number.

145250557 is a deficient number, since it is larger than the sum of its proper divisors (1).

145250557 is an equidigital number, since it uses as much as digits as its factorization.

145250557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35000, while the sum is 34.

The square root of 145250557 is about 12051.9939014256. The cubic root of 145250557 is about 525.6612161574.

The spelling of 145250557 in words is "one hundred forty-five million, two hundred fifty thousand, five hundred fifty-seven".