51243573 has 8 divisors (see below), whose sum is σ = 69913888. Its totient is φ = 33367824.

The previous prime is 51243541. The next prime is 51243629. The reversal of 51243573 is 37534215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51243573 - 2⁵ = 51243541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51243573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51243503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198490 + ... + 198747.

It is an arithmetic number, because the mean of its divisors is an integer number (8739236).

Almost surely, 2^51243573 is an apocalyptic number.

It is an amenable number.

51243573 is a deficient number, since it is larger than the sum of its proper divisors (18670315).

51243573 is a wasteful number, since it uses less digits than its factorization.

51243573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397283.

The product of its digits is 12600, while the sum is 30.

The square root of 51243573 is about 7158.4616364132. The cubic root of 51243573 is about 371.4324142953.

Adding to 51243573 its reverse (37534215), we get a palindrome (88777788).

The spelling of 51243573 in words is "fifty-one million, two hundred forty-three thousand, five hundred seventy-three".