285672553 has 2 divisors, whose sum is σ = 285672554. Its totient is φ = 285672552.

The previous prime is 285672511. The next prime is 285672587. The reversal of 285672553 is 355276582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 243266409 + 42406144 = 15597^2 + 6512^2 .

It is a cyclic number.

It is not a de Polignac number, because 285672553 - 2²¹ = 283575401 is a prime.

It is not a weakly prime, because it can be changed into another prime (285672503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142836276 + 142836277.

It is an arithmetic number, because the mean of its divisors is an integer number (142836277).

Almost surely, 2^285672553 is an apocalyptic number.

It is an amenable number.

285672553 is a deficient number, since it is larger than the sum of its proper divisors (1).

285672553 is an equidigital number, since it uses as much as digits as its factorization.

285672553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 43.

The square root of 285672553 is about 16901.8505791526. The cubic root of 285672553 is about 658.6016867768.

It can be divided in two parts, 285672 and 553, that added together give a square (286225 = 535²).

The spelling of 285672553 in words is "two hundred eighty-five million, six hundred seventy-two thousand, five hundred fifty-three".