51929471 has 8 divisors (see below), whose sum is σ = 57449088. Its totient is φ = 46543000.

The previous prime is 51929461. The next prime is 51929473. The reversal of 51929471 is 17492915.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51929471 is a prime.

It is a super-3 number, since 3×51929471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51929473) 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, 32465 + ... + 34026.

It is an arithmetic number, because the mean of its divisors is an integer number (7181136).

Almost surely, 2^51929471 is an apocalyptic number.

51929471 is a deficient number, since it is larger than the sum of its proper divisors (5519617).

51929471 is a wasteful number, since it uses less digits than its factorization.

51929471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66573.

The product of its digits is 22680, while the sum is 38.

The square root of 51929471 is about 7206.2105853215. The cubic root of 51929471 is about 373.0822891516.

The spelling of 51929471 in words is "fifty-one million, nine hundred twenty-nine thousand, four hundred seventy-one".