51929472 has 64 divisors (see below), whose sum is σ = 157651200. Its totient is φ = 14836224.

The previous prime is 51929461. The next prime is 51929473. The reversal of 51929472 is 27492915.

It is a tau number, because it is divible by the number of its divisors (64).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 51929472.

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, 6972 + ... + 12347.

It is an arithmetic number, because the mean of its divisors is an integer number (2463300).

Almost surely, 2^51929472 is an apocalyptic number.

It is an amenable number.

51929472 is an abundant number, since it is smaller than the sum of its proper divisors (105721728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51929472 is a wasteful number, since it uses less digits than its factorization.

51929472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19343 (or 19331 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 51929472 is about 7206.2106547061. The cubic root of 51929472 is about 373.0822915464.

The spelling of 51929472 in words is "fifty-one million, nine hundred twenty-nine thousand, four hundred seventy-two".