51005552101 has 4 divisors (see below), whose sum is σ = 58292059552. Its totient is φ = 43719044652.

The previous prime is 51005552069. The next prime is 51005552141. The reversal of 51005552101 is 10125550015.

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 51005552101 - 2⁵ = 51005552069 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 (51005552141) 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, 3643253715 + ... + 3643253728.

It is an arithmetic number, because the mean of its divisors is an integer number (14573014888).

Almost surely, 2^51005552101 is an apocalyptic number.

It is an amenable number.

51005552101 is a deficient number, since it is larger than the sum of its proper divisors (7286507451).

51005552101 is an equidigital number, since it uses as much as digits as its factorization.

51005552101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7286507450.

The product of its (nonzero) digits is 1250, while the sum is 25.

The spelling of 51005552101 in words is "fifty-one billion, five million, five hundred fifty-two thousand, one hundred one".