275825550 has 288 divisors, whose sum is σ = 930940416. Its totient is φ = 52588800.

The previous prime is 275825513. The next prime is 275825579. The reversal of 275825550 is 55528572.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 275825499 and 275825508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1651567 + ... + 1651733.

It is an arithmetic number, because the mean of its divisors is an integer number (3232432).

Almost surely, 2^275825550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275825550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465470208).

275825550 is an abundant number, since it is smaller than the sum of its proper divisors (655114866).

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

275825550 is a wasteful number, since it uses less digits than its factorization.

275825550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 140000, while the sum is 39.

The square root of 275825550 is about 16607.9965679187. The cubic root of 275825550 is about 650.9458026004.

The spelling of 275825550 in words is "two hundred seventy-five million, eight hundred twenty-five thousand, five hundred fifty".