51261545301 has 4 divisors (see below), whose sum is σ = 68348727072. Its totient is φ = 34174363532.

The previous prime is 51261545263. The next prime is 51261545303. The reversal of 51261545301 is 10354516215.

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 51261545301 - 2¹⁰ = 51261544277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51261545303) 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, 8543590881 + ... + 8543590886.

It is an arithmetic number, because the mean of its divisors is an integer number (17087181768).

Almost surely, 2^51261545301 is an apocalyptic number.

It is an amenable number.

51261545301 is a deficient number, since it is larger than the sum of its proper divisors (17087181771).

51261545301 is a wasteful number, since it uses less digits than its factorization.

51261545301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17087181770.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 51261545301 in words is "fifty-one billion, two hundred sixty-one million, five hundred forty-five thousand, three hundred one".