55731403223 has 2 divisors, whose sum is σ = 55731403224. Its totient is φ = 55731403222.

The previous prime is 55731403139. The next prime is 55731403237. The reversal of 55731403223 is 32230413755.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55731403223 - 2²² = 55727208919 is a prime.

It is a super-2 number, since 2×55731403223² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55731403243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27865701611 + 27865701612.

It is an arithmetic number, because the mean of its divisors is an integer number (27865701612).

Almost surely, 2^55731403223 is an apocalyptic number.

55731403223 is a deficient number, since it is larger than the sum of its proper divisors (1).

55731403223 is an equidigital number, since it uses as much as digits as its factorization.

55731403223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 35.

Adding to 55731403223 its reverse (32230413755), we get a palindrome (87961816978).

The spelling of 55731403223 in words is "fifty-five billion, seven hundred thirty-one million, four hundred three thousand, two hundred twenty-three".