47752321 has 2 divisors, whose sum is σ = 47752322. Its totient is φ = 47752320.

The previous prime is 47752291. The next prime is 47752343. The reversal of 47752321 is 12325774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40462321 + 7290000 = 6361^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 47752321 - 2²³ = 39363713 is a prime.

It is a Chen prime.

It is equal to p_2874145 and since 47752321 and 2874145 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (47752361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23876160 + 23876161.

It is an arithmetic number, because the mean of its divisors is an integer number (23876161).

Almost surely, 2^47752321 is an apocalyptic number.

It is an amenable number.

47752321 is a deficient number, since it is larger than the sum of its proper divisors (1).

47752321 is an equidigital number, since it uses as much as digits as its factorization.

47752321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11760, while the sum is 31.

The square root of 47752321 is about 6910.3054201678. The cubic root of 47752321 is about 362.7979533683.

The spelling of 47752321 in words is "forty-seven million, seven hundred fifty-two thousand, three hundred twenty-one".