51282825 has 36 divisors (see below), whose sum is σ = 93212784. Its totient is φ = 24860000.

The previous prime is 51282821. The next prime is 51282827. The reversal of 51282825 is 52828215.

It is not a de Polignac number, because 51282825 - 2² = 51282821 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (51282821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6250 + ... + 11900.

It is an arithmetic number, because the mean of its divisors is an integer number (2589244).

Almost surely, 2^51282825 is an apocalyptic number.

51282825 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51282825 is a deficient number, since it is larger than the sum of its proper divisors (41929959).

51282825 is a wasteful number, since it uses less digits than its factorization.

51282825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686 (or 5670 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 51282825 is about 7161.2027621064. The cubic root of 51282825 is about 371.5272277732.

The spelling of 51282825 in words is "fifty-one million, two hundred eighty-two thousand, eight hundred twenty-five".