49470211561 has 3 divisors (see below), whose sum is σ = 49470433981. Its totient is φ = 49469989142.

The previous prime is 49470211519. The next prime is 49470211577. The reversal of 49470211561 is 16511207494.

It is a happy number.

The square root of 49470211561 is 222419.

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

49470211561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 16511207494 = 2 ⋅8255603747.

It is not a de Polignac number, because 49470211561 - 2⁷ = 49470211433 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49470214561) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 111210 + ... + 333628.

Almost surely, 2^49470211561 is an apocalyptic number.

49470211561 is the 222419-th square number.

49470211561 is the 111210-th centered octagonal number.

It is an amenable number.

49470211561 is a deficient number, since it is larger than the sum of its proper divisors (222420).

49470211561 is an frugal number, since it uses more digits than its factorization.

49470211561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444838 (or 222419 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 49470211561 in words is "forty-nine billion, four hundred seventy million, two hundred eleven thousand, five hundred sixty-one".