312555055 has 4 divisors (see below), whose sum is σ = 375066072. Its totient is φ = 250044040.

The previous prime is 312555053. The next prime is 312555059. The reversal of 312555055 is 550555213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 550555213 = 13 ⋅42350401.

It is not a de Polignac number, because 312555055 - 2¹ = 312555053 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 (312555053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31255501 + ... + 31255510.

It is an arithmetic number, because the mean of its divisors is an integer number (93766518).

Almost surely, 2^312555055 is an apocalyptic number.

312555055 is a deficient number, since it is larger than the sum of its proper divisors (62511017).

312555055 is an equidigital number, since it uses as much as digits as its factorization.

312555055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62511016.

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 312555055 is about 17679.2266516384. The cubic root of 312555055 is about 678.6442530785.

The spelling of 312555055 in words is "three hundred twelve million, five hundred fifty-five thousand, fifty-five".