51286461 has 8 divisors (see below), whose sum is σ = 68453760. Its totient is φ = 34155072.

The previous prime is 51286451. The next prime is 51286489. The reversal of 51286461 is 16468215.

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

It is not a de Polignac number, because 51286461 - 2²³ = 42897853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51286441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5445 + ... + 11498.

It is an arithmetic number, because the mean of its divisors is an integer number (8556720).

Almost surely, 2^51286461 is an apocalyptic number.

It is an amenable number.

51286461 is a deficient number, since it is larger than the sum of its proper divisors (17167299).

51286461 is a wasteful number, since it uses less digits than its factorization.

51286461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17955.

The product of its digits is 11520, while the sum is 33.

The square root of 51286461 is about 7161.4566255756. The cubic root of 51286461 is about 371.5360081078.

The spelling of 51286461 in words is "fifty-one million, two hundred eighty-six thousand, four hundred sixty-one".