45551085281 has 24 divisors (see below), whose sum is σ = 50805228600. Its totient is φ = 40791568896.

The previous prime is 45551085259. The next prime is 45551085311. The reversal of 45551085281 is 18258015554.

45551085281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 11384890000 + 34166195281 = 106700^2 + 184841^2 .

It is a de Polignac number, because none of the positive numbers 2^k-45551085281 is a prime.

It is a super-2 number, since 2×45551085281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45551085221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2171861 + ... + 2192733.

It is an arithmetic number, because the mean of its divisors is an integer number (2116884525).

Almost surely, 2^45551085281 is an apocalyptic number.

It is an amenable number.

45551085281 is a deficient number, since it is larger than the sum of its proper divisors (5254143319).

45551085281 is a wasteful number, since it uses less digits than its factorization.

45551085281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21285 (or 21272 counting only the distinct ones).

The product of its (nonzero) digits is 320000, while the sum is 44.

The spelling of 45551085281 in words is "forty-five billion, five hundred fifty-one million, eighty-five thousand, two hundred eighty-one".