47322921 has 4 divisors (see below), whose sum is σ = 63097232. Its totient is φ = 31548612.

The previous prime is 47322911. The next prime is 47322923. The reversal of 47322921 is 12922374.

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 not a de Polignac number, because 47322921 - 2²¹ = 45225769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47322923) 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, 7887151 + ... + 7887156.

It is an arithmetic number, because the mean of its divisors is an integer number (15774308).

Almost surely, 2^47322921 is an apocalyptic number.

It is an amenable number.

47322921 is a deficient number, since it is larger than the sum of its proper divisors (15774311).

47322921 is a wasteful number, since it uses less digits than its factorization.

47322921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15774310.

The product of its digits is 6048, while the sum is 30.

The square root of 47322921 is about 6879.1657197657. The cubic root of 47322921 is about 361.7072228535.

The spelling of 47322921 in words is "forty-seven million, three hundred twenty-two thousand, nine hundred twenty-one".