51041202213541 has 4 divisors (see below), whose sum is σ = 51041223067852. Its totient is φ = 51041181359232.

The previous prime is 51041202213481. The next prime is 51041202213553. The reversal of 51041202213541 is 14531220214015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20446033149441 + 30595169064100 = 4521729^2 + 5531290^2 .

It is a cyclic number.

It is not a de Polignac number, because 51041202213541 - 2³¹ = 51039054729893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51041202213581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6178956 + ... + 11843221.

It is an arithmetic number, because the mean of its divisors is an integer number (12760305766963).

Almost surely, 2^{51041202213541} is an apocalyptic number.

It is an amenable number.

51041202213541 is a deficient number, since it is larger than the sum of its proper divisors (20854311).

51041202213541 is a wasteful number, since it uses less digits than its factorization.

51041202213541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20854310.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 51041202213541 its reverse (14531220214015), we get a palindrome (65572422427556).

The spelling of 51041202213541 in words is "fifty-one trillion, forty-one billion, two hundred two million, two hundred thirteen thousand, five hundred forty-one".