255000393 has 20 divisors (see below), whose sum is σ = 394065540. Its totient is φ = 164136672.

The previous prime is 255000371. The next prime is 255000479. The reversal of 255000393 is 393000552.

It can be written as a sum of positive squares in 2 ways, for example, as 123943689 + 131056704 = 11133^2 + 11448^2 .

It is not a de Polignac number, because 255000393 - 2¹³ = 254992201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255001393) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 51930 + ... + 56627.

It is an arithmetic number, because the mean of its divisors is an integer number (19703277).

Almost surely, 2^255000393 is an apocalyptic number.

It is an amenable number.

255000393 is a deficient number, since it is larger than the sum of its proper divisors (139065147).

255000393 is a wasteful number, since it uses less digits than its factorization.

255000393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108598 (or 108589 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

The square root of 255000393 is about 15968.7317279739. The cubic root of 255000393 is about 634.1328963084.

The spelling of 255000393 in words is "two hundred fifty-five million, three hundred ninety-three", and thus it is an aban number.