51282980 has 24 divisors (see below), whose sum is σ = 123079488. Its totient is φ = 17582688.

The previous prime is 51282953. The next prime is 51282983. The reversal of 51282980 is 8928215.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 51282980.

It is not an unprimeable number, because it can be changed into a prime (51282983) 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, 183014 + ... + 183293.

It is an arithmetic number, because the mean of its divisors is an integer number (5128312).

Almost surely, 2^51282980 is an apocalyptic number.

It is an amenable number.

51282980 is an abundant number, since it is smaller than the sum of its proper divisors (71796508).

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

51282980 is a wasteful number, since it uses less digits than its factorization.

51282980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366323 (or 366321 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 51282980 is about 7161.2135843026. The cubic root of 51282980 is about 371.5276020809.

The spelling of 51282980 in words is "fifty-one million, two hundred eighty-two thousand, nine hundred eighty".