51001021041 has 4 divisors (see below), whose sum is σ = 68001361392. Its totient is φ = 34000680692.

The previous prime is 51001021033. The next prime is 51001021067. The reversal of 51001021041 is 14012010015.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51001021041 - 2³ = 51001021033 is a prime.

It is a super-2 number, since 2×51001021041² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51001021041.

It is not an unprimeable number, because it can be changed into a prime (51001021021) 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 3 ways as a sum of consecutive naturals, for example, 8500170171 + ... + 8500170176.

It is an arithmetic number, because the mean of its divisors is an integer number (17000340348).

Almost surely, 2^51001021041 is an apocalyptic number.

It is an amenable number.

51001021041 is a deficient number, since it is larger than the sum of its proper divisors (17000340351).

51001021041 is a wasteful number, since it uses less digits than its factorization.

51001021041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17000340350.

The product of its (nonzero) digits is 40, while the sum is 15.

Adding to 51001021041 its reverse (14012010015), we get a palindrome (65013031056).

The spelling of 51001021041 in words is "fifty-one billion, one million, twenty-one thousand, forty-one".