51101000447 has 4 divisors (see below), whose sum is σ = 58401143376. Its totient is φ = 43800857520.

The previous prime is 51101000429. The next prime is 51101000497. The reversal of 51101000447 is 74400010115.

It is a happy number.

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

It is not a de Polignac number, because 51101000447 - 2¹⁰ = 51100999423 is a prime.

It is a super-2 number, since 2×51101000447² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51101000497) 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, 3650071454 + ... + 3650071467.

It is an arithmetic number, because the mean of its divisors is an integer number (14600285844).

Almost surely, 2^51101000447 is an apocalyptic number.

51101000447 is a deficient number, since it is larger than the sum of its proper divisors (7300142929).

51101000447 is an equidigital number, since it uses as much as digits as its factorization.

51101000447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7300142928.

The product of its (nonzero) digits is 560, while the sum is 23.

The spelling of 51101000447 in words is "fifty-one billion, one hundred one million, four hundred forty-seven", and thus it is an aban number.