51982473 has 4 divisors (see below), whose sum is σ = 69309968. Its totient is φ = 34654980.

The previous prime is 51982457. The next prime is 51982477. The reversal of 51982473 is 37428915.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 51982473 - 2⁴ = 51982457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51982477) 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, 8663743 + ... + 8663748.

It is an arithmetic number, because the mean of its divisors is an integer number (17327492).

Almost surely, 2^51982473 is an apocalyptic number.

It is an amenable number.

51982473 is a deficient number, since it is larger than the sum of its proper divisors (17327495).

51982473 is a wasteful number, since it uses less digits than its factorization.

51982473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17327494.

The product of its digits is 60480, while the sum is 39.

The square root of 51982473 is about 7209.8871697135. The cubic root of 51982473 is about 373.2091752494.

The spelling of 51982473 in words is "fifty-one million, nine hundred eighty-two thousand, four hundred seventy-three".