51090471 has 6 divisors (see below), whose sum is σ = 73797360. Its totient is φ = 34060308.

The previous prime is 51090443. The next prime is 51090497. The reversal of 51090471 is 17409015.

It is not a de Polignac number, because 51090471 - 2⁹ = 51089959 is a prime.

It is a super-3 number, since 3×51090471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51090271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2838351 + ... + 2838368.

It is an arithmetic number, because the mean of its divisors is an integer number (12299560).

Almost surely, 2^51090471 is an apocalyptic number.

51090471 is a deficient number, since it is larger than the sum of its proper divisors (22706889).

51090471 is a wasteful number, since it uses less digits than its factorization.

51090471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5676725 (or 5676722 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51090471 is about 7147.7598588649. The cubic root of 51090471 is about 371.0621319306.

Adding to 51090471 its reverse (17409015), we get a palindrome (68499486).

The spelling of 51090471 in words is "fifty-one million, ninety thousand, four hundred seventy-one".