51345404 has 24 divisors (see below), whose sum is σ = 98313600. Its totient is φ = 23269680.

The previous prime is 51345379. The next prime is 51345409. The reversal of 51345404 is 40454315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51345409) 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, 15137 + ... + 18215.

It is an arithmetic number, because the mean of its divisors is an integer number (4096400).

Almost surely, 2^51345404 is an apocalyptic number.

It is an amenable number.

51345404 is a deficient number, since it is larger than the sum of its proper divisors (46968196).

51345404 is a wasteful number, since it uses less digits than its factorization.

51345404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 51345404 is about 7165.5707379106. The cubic root of 51345404 is about 371.6782877806.

Adding to 51345404 its reverse (40454315), we get a palindrome (91799719).

The spelling of 51345404 in words is "fifty-one million, three hundred forty-five thousand, four hundred four".