51544465 has 32 divisors (see below), whose sum is σ = 72864000. Its totient is φ = 34276608.

The previous prime is 51544463. The next prime is 51544483. The reversal of 51544465 is 56444515.

It is a cyclic number.

It is not a de Polignac number, because 51544465 - 2¹ = 51544463 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51544465.

It is not an unprimeable number, because it can be changed into a prime (51544463) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224971 + ... + 225199.

It is an arithmetic number, because the mean of its divisors is an integer number (2277000).

Almost surely, 2^51544465 is an apocalyptic number.

It is an amenable number.

51544465 is a deficient number, since it is larger than the sum of its proper divisors (21319535).

51544465 is a wasteful number, since it uses less digits than its factorization.

51544465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

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

The square root of 51544465 is about 7179.4474021334. The cubic root of 51544465 is about 372.1579882558.

The spelling of 51544465 in words is "fifty-one million, five hundred forty-four thousand, four hundred sixty-five".