223142557 has 16 divisors (see below), whose sum is σ = 251910144. Its totient is φ = 195822000.

The previous prime is 223142551. The next prime is 223142581. The reversal of 223142557 is 755241322.

It is not a de Polignac number, because 223142557 - 2²³ = 214753949 is a prime.

It is a super-3 number, since 3×223142557³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

223142557 is a Rhonda number in base 10.

Its product of digits (16800) is a multiple of the sum of its prime divisors (1680).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223142551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235158 + ... + 236104.

It is an arithmetic number, because the mean of its divisors is an integer number (15744384).

Almost surely, 2^223142557 is an apocalyptic number.

It is an amenable number.

223142557 is a deficient number, since it is larger than the sum of its proper divisors (28767587).

223142557 is a wasteful number, since it uses less digits than its factorization.

223142557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680.

The product of its digits is 16800, while the sum is 31.

The square root of 223142557 is about 14937.9569218819. The cubic root of 223142557 is about 606.5418922167.

Adding to 223142557 its reverse (755241322), we get a palindrome (978383879).

The spelling of 223142557 in words is "two hundred twenty-three million, one hundred forty-two thousand, five hundred fifty-seven".