229733557 has 2 divisors, whose sum is σ = 229733558. Its totient is φ = 229733556.

The previous prime is 229733533. The next prime is 229733561. The reversal of 229733557 is 755337922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183846481 + 45887076 = 13559^2 + 6774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229733557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229733527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114866778 + 114866779.

It is an arithmetic number, because the mean of its divisors is an integer number (114866779).

Almost surely, 2^229733557 is an apocalyptic number.

It is an amenable number.

229733557 is a deficient number, since it is larger than the sum of its proper divisors (1).

229733557 is an equidigital number, since it uses as much as digits as its factorization.

229733557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 43.

The square root of 229733557 is about 15156.9639769975. The cubic root of 229733557 is about 612.4558853137.

The spelling of 229733557 in words is "two hundred twenty-nine million, seven hundred thirty-three thousand, five hundred fifty-seven".