51446485 has 8 divisors (see below), whose sum is σ = 62748216. Its totient is φ = 40482240.

The previous prime is 51446449. The next prime is 51446491. The reversal of 51446485 is 58464415.

It can be written as a sum of positive squares in 4 ways, for example, as 2208196 + 49238289 = 1486^2 + 7017^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-51446485 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 84034 + ... + 84643.

It is an arithmetic number, because the mean of its divisors is an integer number (7843527).

Almost surely, 2^51446485 is an apocalyptic number.

It is an amenable number.

51446485 is a deficient number, since it is larger than the sum of its proper divisors (11301731).

51446485 is a wasteful number, since it uses less digits than its factorization.

51446485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168743.

The product of its digits is 76800, while the sum is 37.

The square root of 51446485 is about 7172.6205113612. The cubic root of 51446485 is about 371.9220290780.

The spelling of 51446485 in words is "fifty-one million, four hundred forty-six thousand, four hundred eighty-five".