51006021524 has 24 divisors (see below), whose sum is σ = 89814480000. Its totient is φ = 25345172160.

The previous prime is 51006021509. The next prime is 51006021557. The reversal of 51006021524 is 42512060015.

It is a super-2 number, since 2×51006021524² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51006021493 and 51006021502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423584 + ... + 530504.

It is an arithmetic number, because the mean of its divisors is an integer number (3742270000).

Almost surely, 2^51006021524 is an apocalyptic number.

It is an amenable number.

51006021524 is a deficient number, since it is larger than the sum of its proper divisors (38808458476).

51006021524 is a wasteful number, since it uses less digits than its factorization.

51006021524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107663 (or 107661 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 51006021524 its reverse (42512060015), we get a palindrome (93518081539).

The spelling of 51006021524 in words is "fifty-one billion, six million, twenty-one thousand, five hundred twenty-four".