51217032 has 32 divisors (see below), whose sum is σ = 128724480. Its totient is φ = 16981440.

The previous prime is 51217031. The next prime is 51217037. The reversal of 51217032 is 23071215.

It is not an unprimeable number, because it can be changed into a prime (51217031) 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, 1003 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (4022640).

Almost surely, 2^51217032 is an apocalyptic number.

It is an amenable number.

51217032 is an abundant number, since it is smaller than the sum of its proper divisors (77507448).

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

51217032 is a wasteful number, since it uses less digits than its factorization.

51217032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11373 (or 11369 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 51217032 is about 7156.6075762193. The cubic root of 51217032 is about 371.3682768851.

Adding to 51217032 its reverse (23071215), we get a palindrome (74288247).

The spelling of 51217032 in words is "fifty-one million, two hundred seventeen thousand, thirty-two".