255533610551 has 4 divisors (see below), whose sum is σ = 255640844832. Its totient is φ = 255426376272.

The previous prime is 255533610539. The next prime is 255533610583. The reversal of 255533610551 is 155016335552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255533610551 - 2³⁰ = 254459868727 is a prime.

It is a super-2 number, since 2×255533610551² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255533610499 and 255533610508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255533610511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53613566 + ... + 53618331.

It is an arithmetic number, because the mean of its divisors is an integer number (63910211208).

Almost surely, 2^255533610551 is an apocalyptic number.

255533610551 is a deficient number, since it is larger than the sum of its proper divisors (107234281).

255533610551 is a wasteful number, since it uses less digits than its factorization.

255533610551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107234280.

The product of its (nonzero) digits is 337500, while the sum is 41.

The spelling of 255533610551 in words is "two hundred fifty-five billion, five hundred thirty-three million, six hundred ten thousand, five hundred fifty-one".