145098557 has 2 divisors, whose sum is σ = 145098558. Its totient is φ = 145098556.

The previous prime is 145098533. The next prime is 145098599. The reversal of 145098557 is 755890541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125126596 + 19971961 = 11186^2 + 4469^2 .

It is a cyclic number.

It is not a de Polignac number, because 145098557 - 2⁶ = 145098493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145098257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72549278 + 72549279.

It is an arithmetic number, because the mean of its divisors is an integer number (72549279).

Almost surely, 2^145098557 is an apocalyptic number.

It is an amenable number.

145098557 is a deficient number, since it is larger than the sum of its proper divisors (1).

145098557 is an equidigital number, since it uses as much as digits as its factorization.

145098557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 145098557 is about 12045.6862403103. The cubic root of 145098557 is about 525.4777896843.

The spelling of 145098557 in words is "one hundred forty-five million, ninety-eight thousand, five hundred fifty-seven".