51843725 has 12 divisors (see below), whose sum is σ = 67082016. Its totient is φ = 39671280.

The previous prime is 51843719. The next prime is 51843731. The reversal of 51843725 is 52734815.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (51843719) and next prime (51843731).

It is not a de Polignac number, because 51843725 - 2⁶ = 51843661 is a prime.

It is a Duffinian number.

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, 44507 + ... + 45656.

It is an arithmetic number, because the mean of its divisors is an integer number (5590168).

Almost surely, 2^51843725 is an apocalyptic number.

It is an amenable number.

51843725 is a deficient number, since it is larger than the sum of its proper divisors (15238291).

51843725 is a wasteful number, since it uses less digits than its factorization.

51843725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90196 (or 90191 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 51843725 is about 7200.2586759088. The cubic root of 51843725 is about 372.8768313965.

The spelling of 51843725 in words is "fifty-one million, eight hundred forty-three thousand, seven hundred twenty-five".