51468420 has 48 divisors (see below), whose sum is σ = 147470400. Its totient is φ = 13405056.

The previous prime is 51468419. The next prime is 51468427. The reversal of 51468420 is 2486415.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (51468427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7395 + ... + 12554.

It is an arithmetic number, because the mean of its divisors is an integer number (3072300).

Almost surely, 2^51468420 is an apocalyptic number.

It is an amenable number.

51468420 is an abundant number, since it is smaller than the sum of its proper divisors (96001980).

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

51468420 is a wasteful number, since it uses less digits than its factorization.

51468420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20004 (or 20002 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 51468420 is about 7174.1494269356. The cubic root of 51468420 is about 371.9748797929.

The spelling of 51468420 in words is "fifty-one million, four hundred sixty-eight thousand, four hundred twenty".