55135723 has 2 divisors, whose sum is σ = 55135724. Its totient is φ = 55135722.

The previous prime is 55135721. The next prime is 55135727. The reversal of 55135723 is 32753155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55135723 - 2¹ = 55135721 is a prime.

Together with 55135721, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (55135721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27567861 + 27567862.

It is an arithmetic number, because the mean of its divisors is an integer number (27567862).

Almost surely, 2^55135723 is an apocalyptic number.

55135723 is a deficient number, since it is larger than the sum of its proper divisors (1).

55135723 is an equidigital number, since it uses as much as digits as its factorization.

55135723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15750, while the sum is 31.

The square root of 55135723 is about 7425.3432917273. The cubic root of 55135723 is about 380.6078061569.

Adding to 55135723 its reverse (32753155), we get a palindrome (87888878).

It can be divided in two parts, 5513 and 5723, that added together give a square (11236 = 106²).

The spelling of 55135723 in words is "fifty-five million, one hundred thirty-five thousand, seven hundred twenty-three".