255151639 has 2 divisors, whose sum is σ = 255151640. Its totient is φ = 255151638.

The previous prime is 255151619. The next prime is 255151643. The reversal of 255151639 is 936151552.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 255151639 - 2¹¹ = 255149591 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 255151598 and 255151607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (255151619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127575819 + 127575820.

It is an arithmetic number, because the mean of its divisors is an integer number (127575820).

Almost surely, 2^255151639 is an apocalyptic number.

255151639 is a deficient number, since it is larger than the sum of its proper divisors (1).

255151639 is an equidigital number, since it uses as much as digits as its factorization.

255151639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40500, while the sum is 37.

The square root of 255151639 is about 15973.4667182800. The cubic root of 255151639 is about 634.2582439691.

The spelling of 255151639 in words is "two hundred fifty-five million, one hundred fifty-one thousand, six hundred thirty-nine".