51188574445 has 8 divisors (see below), whose sum is σ = 63086459544. Its totient is φ = 39844079424.

The previous prime is 51188574433. The next prime is 51188574461. The reversal of 51188574445 is 54447588115.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33271948836 + 17916625609 = 182406^2 + 133853^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51188574445 - 2⁵ = 51188574413 is a prime.

It is a super-2 number, since 2×51188574445² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51188574392 and 51188574401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138347314 + ... + 138347683.

It is an arithmetic number, because the mean of its divisors is an integer number (7885807443).

Almost surely, 2^51188574445 is an apocalyptic number.

It is an amenable number.

51188574445 is a deficient number, since it is larger than the sum of its proper divisors (11897885099).

51188574445 is a wasteful number, since it uses less digits than its factorization.

51188574445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276695039.

The product of its digits is 3584000, while the sum is 52.

The spelling of 51188574445 in words is "fifty-one billion, one hundred eighty-eight million, five hundred seventy-four thousand, four hundred forty-five".