51346220 has 12 divisors (see below), whose sum is σ = 107827104. Its totient is φ = 20538480.

The previous prime is 51346219. The next prime is 51346223. The reversal of 51346220 is 2264315.

It is not an unprimeable number, because it can be changed into a prime (51346223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283636 + ... + 1283675.

It is an arithmetic number, because the mean of its divisors is an integer number (8985592).

Almost surely, 2^51346220 is an apocalyptic number.

It is an amenable number.

51346220 is an abundant number, since it is smaller than the sum of its proper divisors (56480884).

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

51346220 is a wasteful number, since it uses less digits than its factorization.

51346220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2567320 (or 2567318 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 51346220 is about 7165.6276766240. The cubic root of 51346220 is about 371.6802567194.

The spelling of 51346220 in words is "fifty-one million, three hundred forty-six thousand, two hundred twenty".