145202557 has 2 divisors, whose sum is σ = 145202558. Its totient is φ = 145202556.

The previous prime is 145202471. The next prime is 145202581. The reversal of 145202557 is 755202541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105083001 + 40119556 = 10251^2 + 6334^2 .

It is a cyclic number.

It is not a de Polignac number, because 145202557 - 2⁷ = 145202429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145202257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72601278 + 72601279.

It is an arithmetic number, because the mean of its divisors is an integer number (72601279).

Almost surely, 2^145202557 is an apocalyptic number.

It is an amenable number.

145202557 is a deficient number, since it is larger than the sum of its proper divisors (1).

145202557 is an equidigital number, since it uses as much as digits as its factorization.

145202557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 145202557 is about 12050.0023651450. The cubic root of 145202557 is about 525.6033058384.

The spelling of 145202557 in words is "one hundred forty-five million, two hundred two thousand, five hundred fifty-seven".