275255305521 has 32 divisors (see below), whose sum is σ = 425281658880. Its totient is φ = 155109657024.

The previous prime is 275255305489. The next prime is 275255305547. The reversal of 275255305521 is 125503552572.

It is not a de Polignac number, because 275255305521 - 2⁵ = 275255305489 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (275255300521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250731 + ... + 783183.

It is an arithmetic number, because the mean of its divisors is an integer number (13290051840).

Almost surely, 2^275255305521 is an apocalyptic number.

275255305521 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

275255305521 is a deficient number, since it is larger than the sum of its proper divisors (150026353359).

275255305521 is a wasteful number, since it uses less digits than its factorization.

275255305521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532805.

The product of its (nonzero) digits is 525000, while the sum is 42.

The spelling of 275255305521 in words is "two hundred seventy-five billion, two hundred fifty-five million, three hundred five thousand, five hundred twenty-one".