255651487 has 16 divisors (see below), whose sum is σ = 315707392. Its totient is φ = 201592800.

The previous prime is 255651481. The next prime is 255651493. The reversal of 255651487 is 784156552.

It is an interprime number because it is at equal distance from previous prime (255651481) and next prime (255651493).

It is a cyclic number.

It is not a de Polignac number, because 255651487 - 2¹⁹ = 255127199 is a prime.

It is a super-2 number, since 2×255651487² = 130715365610622338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255651481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23362 + ... + 32512.

It is an arithmetic number, because the mean of its divisors is an integer number (19731712).

Almost surely, 2^255651487 is an apocalyptic number.

255651487 is a deficient number, since it is larger than the sum of its proper divisors (60055905).

255651487 is a wasteful number, since it uses less digits than its factorization.

255651487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9478.

The product of its digits is 336000, while the sum is 43.

The square root of 255651487 is about 15989.1052595197. The cubic root of 255651487 is about 634.6721493577.

The spelling of 255651487 in words is "two hundred fifty-five million, six hundred fifty-one thousand, four hundred eighty-seven".