51671825 has 12 divisors (see below), whose sum is σ = 64162560. Its totient is φ = 41279760.

The previous prime is 51671821. The next prime is 51671827. The reversal of 51671825 is 52817615.

It is not a de Polignac number, because 51671825 - 2² = 51671821 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51671821) 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 11 ways as a sum of consecutive naturals, for example, 32192 + ... + 33758.

It is an arithmetic number, because the mean of its divisors is an integer number (5346880).

Almost surely, 2^51671825 is an apocalyptic number.

It is an amenable number.

51671825 is a deficient number, since it is larger than the sum of its proper divisors (12490735).

51671825 is a wasteful number, since it uses less digits than its factorization.

51671825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2896 (or 2891 counting only the distinct ones).

The product of its digits is 16800, while the sum is 35.

The square root of 51671825 is about 7188.3116932977. The cubic root of 51671825 is about 372.4642549368.

The spelling of 51671825 in words is "fifty-one million, six hundred seventy-one thousand, eight hundred twenty-five".