51080445 has 24 divisors (see below), whose sum is σ = 95351256. Its totient is φ = 25147008.

The previous prime is 51080443. The next prime is 51080459. The reversal of 51080445 is 54408015.

It can be written as a sum of positive squares in 4 ways, for example, as 15129 + 51065316 = 123^2 + 7146^2 .

It is not a de Polignac number, because 51080445 - 2¹ = 51080443 is a prime.

It is a super-2 number, since 2×51080445² = 5218423722796050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51080443) 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, 43074 + ... + 44243.

It is an arithmetic number, because the mean of its divisors is an integer number (3972969).

Almost surely, 2^51080445 is an apocalyptic number.

It is an amenable number.

51080445 is a deficient number, since it is larger than the sum of its proper divisors (44270811).

51080445 is a wasteful number, since it uses less digits than its factorization.

51080445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87341 (or 87338 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 51080445 is about 7147.0584858388. The cubic root of 51080445 is about 371.0378579173.

The spelling of 51080445 in words is "fifty-one million, eighty thousand, four hundred forty-five".