51445214260 has 72 divisors (see below), whose sum is σ = 120990011688. Its totient is φ = 18354336000.

The previous prime is 51445214251. The next prime is 51445214341. The reversal of 51445214260 is 6241254415.

It can be written as a sum of positive squares in 4 ways, for example, as 1395470736 + 50049743524 = 37356^2 + 223718^2 .

It is a super-2 number, since 2×51445214260² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72291 + ... + 328810.

It is an arithmetic number, because the mean of its divisors is an integer number (1680416829).

Almost surely, 2^51445214260 is an apocalyptic number.

It is an amenable number.

51445214260 is an abundant number, since it is smaller than the sum of its proper divisors (69544797428).

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

51445214260 is a wasteful number, since it uses less digits than its factorization.

51445214260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401185 (or 401172 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 51445214260 its reverse (6241254415), we get a palindrome (57686468675).

The spelling of 51445214260 in words is "fifty-one billion, four hundred forty-five million, two hundred fourteen thousand, two hundred sixty".