47474321 has 4 divisors (see below), whose sum is σ = 47601972. Its totient is φ = 47346672.

The previous prime is 47474281. The next prime is 47474327. The reversal of 47474321 is 12347474.

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 33223696 + 14250625 = 5764^2 + 3775^2 .

It is a cyclic number.

It is not a de Polignac number, because 47474321 - 2¹⁴ = 47457937 is a prime.

It is a super-2 number, since 2×47474321² = 4507622308822082, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47474327) 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, 63266 + ... + 64011.

It is an arithmetic number, because the mean of its divisors is an integer number (11900493).

Almost surely, 2^47474321 is an apocalyptic number.

It is an amenable number.

47474321 is a deficient number, since it is larger than the sum of its proper divisors (127651).

47474321 is a wasteful number, since it uses less digits than its factorization.

47474321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127650.

The product of its digits is 18816, while the sum is 32.

The square root of 47474321 is about 6890.1611737317. The cubic root of 47474321 is about 362.0925482978.

The spelling of 47474321 in words is "forty-seven million, four hundred seventy-four thousand, three hundred twenty-one".