51466275 has 72 divisors (see below), whose sum is σ = 108055584. Its totient is φ = 22924800.

The previous prime is 51466237. The next prime is 51466301. The reversal of 51466275 is 57266415.

51466275 = T₁₉₃₉ + T₁₉₄₀ + ... + T₁₉₆₅.

It is a happy number.

It is a Cunningham number, because it is equal to 7174²-1.

It is not a de Polignac number, because 51466275 - 2¹¹ = 51464227 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 64177 + ... + 64973.

It is an arithmetic number, because the mean of its divisors is an integer number (1500772).

Almost surely, 2^51466275 is an apocalyptic number.

51466275 is an abundant number, since it is smaller than the sum of its proper divisors (56589309).

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

51466275 is a wasteful number, since it uses less digits than its factorization.

51466275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 51466275 is about 7173.9999303039. Note that the first 4 decimals coincide. The cubic root of 51466275 is about 371.9697122410.

The spelling of 51466275 in words is "fifty-one million, four hundred sixty-six thousand, two hundred seventy-five".