47322257 has 4 divisors (see below), whose sum is σ = 47395380. Its totient is φ = 47249136.

The previous prime is 47322221. The next prime is 47322259. The reversal of 47322257 is 75222374.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6885376 + 40436881 = 2624^2 + 6359^2 .

It is a cyclic number.

It is not a de Polignac number, because 47322257 - 2⁶ = 47322193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47322259) 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, 35582 + ... + 36887.

It is an arithmetic number, because the mean of its divisors is an integer number (11848845).

Almost surely, 2^47322257 is an apocalyptic number.

It is an amenable number.

47322257 is a deficient number, since it is larger than the sum of its proper divisors (73123).

47322257 is an equidigital number, since it uses as much as digits as its factorization.

47322257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73122.

The product of its digits is 23520, while the sum is 32.

The square root of 47322257 is about 6879.1174579302. The cubic root of 47322257 is about 361.7055311101.

The spelling of 47322257 in words is "forty-seven million, three hundred twenty-two thousand, two hundred fifty-seven".