51407973 has 16 divisors (see below), whose sum is σ = 78019200. Its totient is φ = 33435360.

The previous prime is 51407971. The next prime is 51407999. The reversal of 51407973 is 37970415.

It is a happy number.

51407973 is a `hidden beast` number, since 514 + 0 + 79 + 73 = 666.

It is not a de Polignac number, because 51407973 - 2¹ = 51407971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51407971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22113 + ... + 24326.

It is an arithmetic number, because the mean of its divisors is an integer number (4876200).

Almost surely, 2^51407973 is an apocalyptic number.

It is an amenable number.

51407973 is a deficient number, since it is larger than the sum of its proper divisors (26611227).

51407973 is a wasteful number, since it uses less digits than its factorization.

51407973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46489 (or 46483 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 51407973 is about 7169.9353553571. The cubic root of 51407973 is about 371.8292009883.

The spelling of 51407973 in words is "fifty-one million, four hundred seven thousand, nine hundred seventy-three".