372471221 has 2 divisors, whose sum is σ = 372471222. Its totient is φ = 372471220.

The previous prime is 372471191. The next prime is 372471233. The reversal of 372471221 is 122174273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348568900 + 23902321 = 18670^2 + 4889^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-372471221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (372471721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186235610 + 186235611.

It is an arithmetic number, because the mean of its divisors is an integer number (186235611).

Almost surely, 2^372471221 is an apocalyptic number.

It is an amenable number.

372471221 is a deficient number, since it is larger than the sum of its proper divisors (1).

372471221 is an equidigital number, since it uses as much as digits as its factorization.

372471221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 29.

The square root of 372471221 is about 19299.5134912774. The cubic root of 372471221 is about 719.5001810158.

The spelling of 372471221 in words is "three hundred seventy-two million, four hundred seventy-one thousand, two hundred twenty-one".