51280575 has 24 divisors (see below), whose sum is σ = 85411200. Its totient is φ = 27147360.

The previous prime is 51280571. The next prime is 51280577. The reversal of 51280575 is 57508215.

It is a happy number.

It is not a de Polignac number, because 51280575 - 2² = 51280571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51280571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7966 + ... + 12884.

It is an arithmetic number, because the mean of its divisors is an integer number (3558800).

Almost surely, 2^51280575 is an apocalyptic number.

51280575 is a deficient number, since it is larger than the sum of its proper divisors (34130625).

51280575 is a wasteful number, since it uses less digits than its factorization.

51280575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071 (or 5066 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 51280575 is about 7161.0456638678. The cubic root of 51280575 is about 371.5217941900.

The spelling of 51280575 in words is "fifty-one million, two hundred eighty thousand, five hundred seventy-five".