55015123 has 2 divisors, whose sum is σ = 55015124. Its totient is φ = 55015122.

The previous prime is 55015109. The next prime is 55015133. The reversal of 55015123 is 32151055.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55015123 - 2⁵ = 55015091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55015094 and 55015103.

It is not a weakly prime, because it can be changed into another prime (55015133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27507561 + 27507562.

It is an arithmetic number, because the mean of its divisors is an integer number (27507562).

Almost surely, 2^55015123 is an apocalyptic number.

55015123 is a deficient number, since it is larger than the sum of its proper divisors (1).

55015123 is an equidigital number, since it uses as much as digits as its factorization.

55015123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 55015123 is about 7417.2180094696. The cubic root of 55015123 is about 380.3300986699.

Adding to 55015123 its reverse (32151055), we get a palindrome (87166178).

The spelling of 55015123 in words is "fifty-five million, fifteen thousand, one hundred twenty-three".