51306046 has 48 divisors (see below), whose sum is σ = 90305280. Its totient is φ = 21664160.

The previous prime is 51306041. The next prime is 51306053. The reversal of 51306046 is 64060315.

It is a self number, because there is not a number n which added to its sum of digits gives 51306046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51306041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 869565 + ... + 869623.

It is an arithmetic number, because the mean of its divisors is an integer number (1881360).

Almost surely, 2^51306046 is an apocalyptic number.

51306046 is a deficient number, since it is larger than the sum of its proper divisors (38999234).

51306046 is a wasteful number, since it uses less digits than its factorization.

51306046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 51306046 is about 7162.8238844746. The cubic root of 51306046 is about 371.5832954849.

The spelling of 51306046 in words is "fifty-one million, three hundred six thousand, forty-six".