51550061456 has 20 divisors (see below), whose sum is σ = 100233691404. Its totient is φ = 25683302400.

The previous prime is 51550061449. The next prime is 51550061461. The reversal of 51550061456 is 65416005515.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43604121856 + 7945939600 = 208816^2 + 89140^2 .

It is a super-2 number, since 2×51550061456² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5728385 + ... + 5737376.

Almost surely, 2^51550061456 is an apocalyptic number.

It is an amenable number.

51550061456 is a deficient number, since it is larger than the sum of its proper divisors (48683629948).

51550061456 is a wasteful number, since it uses less digits than its factorization.

51550061456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11466050 (or 11466044 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 51550061456 in words is "fifty-one billion, five hundred fifty million, sixty-one thousand, four hundred fifty-six".