47557577929 has 3 divisors (see below), whose sum is σ = 47557796007. Its totient is φ = 47557359852.

The previous prime is 47557577909. The next prime is 47557577933. The reversal of 47557577929 is 92977575574.

The square root of 47557577929 is 218077.

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.

It can be written as a sum of positive squares in only one way, i.e., 41324791225 + 6232786704 = 203285^2 + 78948^2 .

It is not a de Polignac number, because 47557577929 - 2¹⁷ = 47557446857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47557577909) 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, 109039 + ... + 327115.

It is an arithmetic number, because the mean of its divisors is an integer number (15852598669).

Almost surely, 2^47557577929 is an apocalyptic number.

47557577929 is the 218077-th square number.

47557577929 is the 109039-th centered octagonal number.

It is an amenable number.

47557577929 is a deficient number, since it is larger than the sum of its proper divisors (218078).

47557577929 is an frugal number, since it uses more digits than its factorization.

47557577929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436154 (or 218077 counting only the distinct ones).

The product of its digits is 194481000, while the sum is 67.

The spelling of 47557577929 in words is "forty-seven billion, five hundred fifty-seven million, five hundred seventy-seven thousand, nine hundred twenty-nine".