51613456 has 10 divisors (see below), whose sum is σ = 100001102. Its totient is φ = 25806720.

The previous prime is 51613453. The next prime is 51613469. The reversal of 51613456 is 65431615.

It can be written as a sum of positive squares in only one way, i.e., 51609856 + 3600 = 7184^2 + 60^2 .

It is not an unprimeable number, because it can be changed into a prime (51613453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1612905 + ... + 1612936.

Almost surely, 2^51613456 is an apocalyptic number.

It is an amenable number.

51613456 is a deficient number, since it is larger than the sum of its proper divisors (48387646).

51613456 is a wasteful number, since it uses less digits than its factorization.

51613456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225849 (or 3225843 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 51613456 is about 7184.2505524237. The cubic root of 51613456 is about 372.3239556713.

The spelling of 51613456 in words is "fifty-one million, six hundred thirteen thousand, four hundred fifty-six".