51492471 has 8 divisors (see below), whose sum is σ = 68715504. Its totient is φ = 34298880.

The previous prime is 51492443. The next prime is 51492491. The reversal of 51492471 is 17429415.

It is a happy number.

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-51492471 is a prime.

It is a super-3 number, since 3×51492471³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51492421) 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, 2890 + ... + 10551.

It is an arithmetic number, because the mean of its divisors is an integer number (8589438).

Almost surely, 2^51492471 is an apocalyptic number.

51492471 is a deficient number, since it is larger than the sum of its proper divisors (17223033).

51492471 is a wasteful number, since it uses less digits than its factorization.

51492471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14721.

The product of its digits is 10080, while the sum is 33.

The square root of 51492471 is about 7175.8254577435. The cubic root of 51492471 is about 372.0328115931.

The spelling of 51492471 in words is "fifty-one million, four hundred ninety-two thousand, four hundred seventy-one".