51376220 has 24 divisors (see below), whose sum is σ = 123303264. Its totient is φ = 17614656.

The previous prime is 51376219. The next prime is 51376223. The reversal of 51376220 is 2267315.

It is a self number, because there is not a number n which added to its sum of digits gives 51376220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51376223) 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, 183347 + ... + 183626.

It is an arithmetic number, because the mean of its divisors is an integer number (5137636).

Almost surely, 2^51376220 is an apocalyptic number.

It is an amenable number.

51376220 is an abundant number, since it is smaller than the sum of its proper divisors (71927044).

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

51376220 is a wasteful number, since it uses less digits than its factorization.

51376220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366989 (or 366987 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 51376220 is about 7167.7206976835. The cubic root of 51376220 is about 371.7526296990.

The spelling of 51376220 in words is "fifty-one million, three hundred seventy-six thousand, two hundred twenty".