51521041005 has 64 divisors (see below), whose sum is σ = 95676387840. Its totient is φ = 23187050496.

The previous prime is 51521041001. The next prime is 51521041021. The reversal of 51521041005 is 50014012515.

It is not a de Polignac number, because 51521041005 - 2² = 51521041001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51521041001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4355479 + ... + 4367291.

It is an arithmetic number, because the mean of its divisors is an integer number (1494943560).

Almost surely, 2^51521041005 is an apocalyptic number.

It is an amenable number.

51521041005 is a deficient number, since it is larger than the sum of its proper divisors (44155346835).

51521041005 is a wasteful number, since it uses less digits than its factorization.

51521041005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12470.

The product of its (nonzero) digits is 1000, while the sum is 24.

The spelling of 51521041005 in words is "fifty-one billion, five hundred twenty-one million, forty-one thousand, five".