145587857 has 2 divisors, whose sum is σ = 145587858. Its totient is φ = 145587856.

The previous prime is 145587839. The next prime is 145587863. The reversal of 145587857 is 758785541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 144985681 + 602176 = 12041^2 + 776^2 .

It is a cyclic number.

It is not a de Polignac number, because 145587857 - 2¹⁴ = 145571473 is a prime.

It is not a weakly prime, because it can be changed into another prime (145587887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72793928 + 72793929.

It is an arithmetic number, because the mean of its divisors is an integer number (72793929).

Almost surely, 2^145587857 is an apocalyptic number.

It is an amenable number.

145587857 is a deficient number, since it is larger than the sum of its proper divisors (1).

145587857 is an equidigital number, since it uses as much as digits as its factorization.

145587857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568000, while the sum is 50.

The square root of 145587857 is about 12065.9793220443. The cubic root of 145587857 is about 526.0677974074.

The spelling of 145587857 in words is "one hundred forty-five million, five hundred eighty-seven thousand, eight hundred fifty-seven".