51541505011 has 4 divisors (see below), whose sum is σ = 51546154072. Its totient is φ = 51536855952.

The previous prime is 51541505003. The next prime is 51541505027. The reversal of 51541505011 is 11050514515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11050514515 = 5 ⋅2210102903.

It is a cyclic number.

It is not a de Polignac number, because 51541505011 - 2³ = 51541505003 is a prime.

It is a super-2 number, since 2×51541505011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (51541505111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2307861 + ... + 2330086.

It is an arithmetic number, because the mean of its divisors is an integer number (12886538518).

Almost surely, 2^51541505011 is an apocalyptic number.

51541505011 is a deficient number, since it is larger than the sum of its proper divisors (4649061).

51541505011 is a wasteful number, since it uses less digits than its factorization.

51541505011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649060.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 51541505011 in words is "fifty-one billion, five hundred forty-one million, five hundred five thousand, eleven".