51163047 has 48 divisors (see below), whose sum is σ = 87272640. Its totient is φ = 28578816.

The previous prime is 51163043. The next prime is 51163117. The reversal of 51163047 is 74036115.

It is not a de Polignac number, because 51163047 - 2² = 51163043 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51163047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51163043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57238 + ... + 58124.

It is an arithmetic number, because the mean of its divisors is an integer number (1818180).

Almost surely, 2^51163047 is an apocalyptic number.

51163047 is a deficient number, since it is larger than the sum of its proper divisors (36109593).

51163047 is a wasteful number, since it uses less digits than its factorization.

51163047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952 (or 949 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 51163047 is about 7152.8348925444. The cubic root of 51163047 is about 371.2377515260.

The spelling of 51163047 in words is "fifty-one million, one hundred sixty-three thousand, forty-seven".