732401221 has 2 divisors, whose sum is σ = 732401222. Its totient is φ = 732401220.

The previous prime is 732401171. The next prime is 732401261. The reversal of 732401221 is 122104237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 696220996 + 36180225 = 26386^2 + 6015^2 .

It is an emirp because it is prime and its reverse (122104237) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 732401221 - 2¹⁵ = 732368453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 732401192 and 732401201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (732401261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 366200610 + 366200611.

It is an arithmetic number, because the mean of its divisors is an integer number (366200611).

Almost surely, 2^732401221 is an apocalyptic number.

It is an amenable number.

732401221 is a deficient number, since it is larger than the sum of its proper divisors (1).

732401221 is an equidigital number, since it uses as much as digits as its factorization.

732401221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 732401221 is about 27062.9122786148. The cubic root of 732401221 is about 901.3975082680.

Adding to 732401221 its reverse (122104237), we get a palindrome (854505458).

The spelling of 732401221 in words is "seven hundred thirty-two million, four hundred one thousand, two hundred twenty-one".