255610551 has 16 divisors (see below), whose sum is σ = 391526144. Its totient is φ = 145304064.

The previous prime is 255610549. The next prime is 255610577. The reversal of 255610551 is 155016552.

It is not a de Polignac number, because 255610551 - 2¹ = 255610549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255610501) 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, 27481 + ... + 35586.

It is an arithmetic number, because the mean of its divisors is an integer number (24470384).

Almost surely, 2^255610551 is an apocalyptic number.

255610551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

255610551 is a deficient number, since it is larger than the sum of its proper divisors (135915593).

255610551 is a wasteful number, since it uses less digits than its factorization.

255610551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63270.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 255610551 is about 15987.8250866089. The cubic root of 255610551 is about 634.6382720843.

The spelling of 255610551 in words is "two hundred fifty-five million, six hundred ten thousand, five hundred fifty-one".