275056561052 has 144 divisors (see below), whose sum is σ = 645430044672. Its totient is φ = 99759703680.

The previous prime is 275056560983. The next prime is 275056561057. The reversal of 275056561052 is 250165650572.

It is a happy number.

It is a super-2 number, since 2×275056561052² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 275056560994 and 275056561012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275056561057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4039763 + ... + 4107285.

It is an arithmetic number, because the mean of its divisors is an integer number (4482153088).

Almost surely, 2^275056561052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275056561052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (322715022336).

275056561052 is an abundant number, since it is smaller than the sum of its proper divisors (370373483620).

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

275056561052 is a wasteful number, since it uses less digits than its factorization.

275056561052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67616 (or 67595 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 44.

The spelling of 275056561052 in words is "two hundred seventy-five billion, fifty-six million, five hundred sixty-one thousand, fifty-two".