145585613 has 2 divisors, whose sum is σ = 145585614. Its totient is φ = 145585612.

The previous prime is 145585553. The next prime is 145585633. The reversal of 145585613 is 316585541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85414564 + 60171049 = 9242^2 + 7757^2 .

It is an emirp because it is prime and its reverse (316585541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145585613 - 2¹² = 145581517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145585633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72792806 + 72792807.

It is an arithmetic number, because the mean of its divisors is an integer number (72792807).

Almost surely, 2^145585613 is an apocalyptic number.

It is an amenable number.

145585613 is a deficient number, since it is larger than the sum of its proper divisors (1).

145585613 is an equidigital number, since it uses as much as digits as its factorization.

145585613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 145585613 is about 12065.8863329637. The cubic root of 145585613 is about 526.0650945670.

The spelling of 145585613 in words is "one hundred forty-five million, five hundred eighty-five thousand, six hundred thirteen".