51020975 has 12 divisors (see below), whose sum is σ = 63355320. Its totient is φ = 40759200.

The previous prime is 51020929. The next prime is 51020993. The reversal of 51020975 is 57902015.

It is not a de Polignac number, because 51020975 - 2¹⁰ = 51019951 is a prime.

It is a congruent number.

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, 30665 + ... + 32285.

It is an arithmetic number, because the mean of its divisors is an integer number (5279610).

Almost surely, 2^51020975 is an apocalyptic number.

51020975 is a deficient number, since it is larger than the sum of its proper divisors (12334345).

51020975 is a wasteful number, since it uses less digits than its factorization.

51020975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2890 (or 2885 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 51020975 is about 7142.8968213184. The cubic root of 51020975 is about 370.8938093797.

The spelling of 51020975 in words is "fifty-one million, twenty thousand, nine hundred seventy-five".