47773021 has 4 divisors (see below), whose sum is σ = 47926944. Its totient is φ = 47619100.

The previous prime is 47773013. The next prime is 47773051. The reversal of 47773021 is 12037774.

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 47773021 - 2³ = 47773013 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 (47773051) 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, 76495 + ... + 77116.

It is an arithmetic number, because the mean of its divisors is an integer number (11981736).

Almost surely, 2^47773021 is an apocalyptic number.

It is an amenable number.

47773021 is a deficient number, since it is larger than the sum of its proper divisors (153923).

47773021 is a wasteful number, since it uses less digits than its factorization.

47773021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153922.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 47773021 is about 6911.8030209201. The cubic root of 47773021 is about 362.8503685012.

The spelling of 47773021 in words is "forty-seven million, seven hundred seventy-three thousand, twenty-one".