255121100 has 36 divisors (see below), whose sum is σ = 596201424. Its totient is φ = 94198080.

The previous prime is 255121067. The next prime is 255121109. The reversal of 255121100 is 1121552.

It is not an unprimeable number, because it can be changed into a prime (255121109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96824 + ... + 99423.

Almost surely, 2^255121100 is an apocalyptic number.

255121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255121100 is an abundant number, since it is smaller than the sum of its proper divisors (341080324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255121100 is a wasteful number, since it uses less digits than its factorization.

255121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196274 (or 196267 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 17.

The square root of 255121100 is about 15972.5107606788. The cubic root of 255121100 is about 634.2329382523.

Adding to 255121100 its reverse (1121552), we get a palindrome (256242652).

The spelling of 255121100 in words is "two hundred fifty-five million, one hundred twenty-one thousand, one hundred".