51446545 has 8 divisors (see below), whose sum is σ = 62130024. Its totient is φ = 40894464.

The previous prime is 51446537. The next prime is 51446579. The reversal of 51446545 is 54564415.

It can be written as a sum of positive squares in 4 ways, for example, as 16589329 + 34857216 = 4073^2 + 5904^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51446545 - 2³ = 51446537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51446545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31984 + ... + 33553.

It is an arithmetic number, because the mean of its divisors is an integer number (7766253).

Almost surely, 2^51446545 is an apocalyptic number.

It is an amenable number.

51446545 is a deficient number, since it is larger than the sum of its proper divisors (10683479).

51446545 is a wasteful number, since it uses less digits than its factorization.

51446545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65699.

The product of its digits is 48000, while the sum is 34.

The square root of 51446545 is about 7172.6246939318. The cubic root of 51446545 is about 371.9221736639.

The spelling of 51446545 in words is "fifty-one million, four hundred forty-six thousand, five hundred forty-five".