51816046 has 8 divisors (see below), whose sum is σ = 79619904. Its totient is φ = 25276080.

The previous prime is 51816029. The next prime is 51816049. The reversal of 51816046 is 64061815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 51815999 and 51816017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51816049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315870 + ... + 316033.

It is an arithmetic number, because the mean of its divisors is an integer number (9952488).

Almost surely, 2^51816046 is an apocalyptic number.

51816046 is a deficient number, since it is larger than the sum of its proper divisors (27803858).

51816046 is a wasteful number, since it uses less digits than its factorization.

51816046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631946.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 51816046 is about 7198.3363355709. The cubic root of 51816046 is about 372.8104608112.

The spelling of 51816046 in words is "fifty-one million, eight hundred sixteen thousand, forty-six".