47245321 has 4 divisors (see below), whose sum is σ = 48874500. Its totient is φ = 45616144.

The previous prime is 47245309. The next prime is 47245339. The reversal of 47245321 is 12354274.

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 31753225 + 15492096 = 5635^2 + 3936^2 .

It is a cyclic number.

It is not a de Polignac number, because 47245321 - 2¹³ = 47237129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47245321.

It is not an unprimeable number, because it can be changed into a prime (47245301) 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, 814546 + ... + 814603.

It is an arithmetic number, because the mean of its divisors is an integer number (12218625).

Almost surely, 2^47245321 is an apocalyptic number.

It is an amenable number.

47245321 is a deficient number, since it is larger than the sum of its proper divisors (1629179).

47245321 is a wasteful number, since it uses less digits than its factorization.

47245321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1629178.

The product of its digits is 6720, while the sum is 28.

The square root of 47245321 is about 6873.5231868380. The cubic root of 47245321 is about 361.5094058401.

Adding to 47245321 its reverse (12354274), we get a palindrome (59599595).

The spelling of 47245321 in words is "forty-seven million, two hundred forty-five thousand, three hundred twenty-one".