51834540 has 24 divisors (see below), whose sum is σ = 145136880. Its totient is φ = 13822528.

The previous prime is 51834539. The next prime is 51834553. The reversal of 51834540 is 4543815.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 51834498 and 51834507.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431895 + ... + 432014.

It is an arithmetic number, because the mean of its divisors is an integer number (6047370).

Almost surely, 2^51834540 is an apocalyptic number.

It is an amenable number.

51834540 is an abundant number, since it is smaller than the sum of its proper divisors (93302340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51834540 is a wasteful number, since it uses less digits than its factorization.

51834540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863921 (or 863919 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 51834540 is about 7199.6208233490. The cubic root of 51834540 is about 372.8548095994.

The spelling of 51834540 in words is "fifty-one million, eight hundred thirty-four thousand, five hundred forty".