51081675 has 12 divisors (see below), whose sum is σ = 84455160. Its totient is φ = 27243520.

The previous prime is 51081661. The next prime is 51081691. The reversal of 51081675 is 57618015.

It is not a de Polignac number, because 51081675 - 2¹¹ = 51079627 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340470 + ... + 340619.

It is an arithmetic number, because the mean of its divisors is an integer number (7037930).

Almost surely, 2^51081675 is an apocalyptic number.

51081675 is a deficient number, since it is larger than the sum of its proper divisors (33373485).

51081675 is a wasteful number, since it uses less digits than its factorization.

51081675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681102 (or 681097 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

The square root of 51081675 is about 7147.1445347075. The cubic root of 51081675 is about 371.0408360491.

The spelling of 51081675 in words is "fifty-one million, eighty-one thousand, six hundred seventy-five".