49505805001 has 3 divisors (see below), whose sum is σ = 49506027501. Its totient is φ = 49505582502.

The previous prime is 49505804983. The next prime is 49505805059. The reversal of 49505805001 is 10050850594.

The square root of 49505805001 is 222499.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10050850594 = 2 ⋅5025425297.

It is a de Polignac number, because none of the positive numbers 2^k-49505805001 is a prime.

It is a super-2 number, since 2×49505805001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49505805301) 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 2 ways as a sum of consecutive naturals, for example, 111250 + ... + 333748.

It is an arithmetic number, because the mean of its divisors is an integer number (16502009167).

Almost surely, 2^49505805001 is an apocalyptic number.

49505805001 is the 222499-th square number.

49505805001 is the 111250-th centered octagonal number.

It is an amenable number.

49505805001 is a deficient number, since it is larger than the sum of its proper divisors (222500).

49505805001 is an frugal number, since it uses more digits than its factorization.

49505805001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444998 (or 222499 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 37.

The spelling of 49505805001 in words is "forty-nine billion, five hundred five million, eight hundred five thousand, one".