51270404 has 24 divisors (see below), whose sum is σ = 96649728. Its totient is φ = 23728320.

The previous prime is 51270403. The next prime is 51270409. The reversal of 51270404 is 40407215.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 51270404.

It is not an unprimeable number, because it can be changed into a prime (51270403) 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, 6137 + ... + 11840.

It is an arithmetic number, because the mean of its divisors is an integer number (4027072).

Almost surely, 2^51270404 is an apocalyptic number.

It is an amenable number.

51270404 is a deficient number, since it is larger than the sum of its proper divisors (45379324).

51270404 is a wasteful number, since it uses less digits than its factorization.

51270404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18035 (or 18033 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 51270404 is about 7160.3354670015. The cubic root of 51270404 is about 371.4972299958.

Adding to 51270404 its reverse (40407215), we get a palindrome (91677619).

The spelling of 51270404 in words is "fifty-one million, two hundred seventy thousand, four hundred four".