51244473 has 8 divisors (see below), whose sum is σ = 78086848. Its totient is φ = 29282544.

The previous prime is 51244447. The next prime is 51244493. The reversal of 51244473 is 37444215.

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

It is not a de Polignac number, because 51244473 - 2⁸ = 51244217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51244473.

It is not an unprimeable number, because it can be changed into a prime (51244493) 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, 1220086 + ... + 1220127.

It is an arithmetic number, because the mean of its divisors is an integer number (9760856).

Almost surely, 2^51244473 is an apocalyptic number.

It is an amenable number.

51244473 is a deficient number, since it is larger than the sum of its proper divisors (26842375).

51244473 is a wasteful number, since it uses less digits than its factorization.

51244473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440223.

The product of its digits is 13440, while the sum is 30.

The square root of 51244473 is about 7158.5244988056. The cubic root of 51244473 is about 371.4345887938.

Adding to 51244473 its reverse (37444215), we get a palindrome (88688688).

The spelling of 51244473 in words is "fifty-one million, two hundred forty-four thousand, four hundred seventy-three".