223305157 has 4 divisors (see below), whose sum is σ = 235058080. Its totient is φ = 211552236.

The previous prime is 223305143. The next prime is 223305179. The reversal of 223305157 is 751503322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751503322 = 2 ⋅375751661.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223305157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223305107) 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 in 3 ways as a sum of consecutive naturals, for example, 5876433 + ... + 5876470.

It is an arithmetic number, because the mean of its divisors is an integer number (58764520).

Almost surely, 2^223305157 is an apocalyptic number.

It is an amenable number.

223305157 is a deficient number, since it is larger than the sum of its proper divisors (11752923).

223305157 is a wasteful number, since it uses less digits than its factorization.

223305157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11752922.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 223305157 is about 14943.3984421215. The cubic root of 223305157 is about 606.6891818651.

Adding to 223305157 its reverse (751503322), we get a palindrome (974808479).

The spelling of 223305157 in words is "two hundred twenty-three million, three hundred five thousand, one hundred fifty-seven".