51047073 has 72 divisors (see below), whose sum is σ = 99234720. Its totient is φ = 24917760.

The previous prime is 51047071. The next prime is 51047089. The reversal of 51047073 is 37074015.

It is not a de Polignac number, because 51047073 - 2¹ = 51047071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51047071) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 82158 + ... + 82776.

It is an arithmetic number, because the mean of its divisors is an integer number (1378260).

Almost surely, 2^51047073 is an apocalyptic number.

It is an amenable number.

51047073 is a deficient number, since it is larger than the sum of its proper divisors (48187647).

51047073 is a wasteful number, since it uses less digits than its factorization.

51047073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 51047073 is about 7144.7234376146. The cubic root of 51047073 is about 370.9570378636.

The spelling of 51047073 in words is "fifty-one million, forty-seven thousand, seventy-three".