512313145 has 4 divisors (see below), whose sum is σ = 614775780. Its totient is φ = 409850512.

The previous prime is 512313143. The next prime is 512313149. The reversal of 512313145 is 541313215.

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: 541313215 = 5 ⋅108262643.

It can be written as a sum of positive squares in 2 ways, for example, as 245611584 + 266701561 = 15672^2 + 16331^2 .

It is a cyclic number.

It is not a de Polignac number, because 512313145 - 2¹ = 512313143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (512313143) 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, 51231310 + ... + 51231319.

It is an arithmetic number, because the mean of its divisors is an integer number (153693945).

Almost surely, 2^512313145 is an apocalyptic number.

It is an amenable number.

512313145 is a deficient number, since it is larger than the sum of its proper divisors (102462635).

512313145 is a wasteful number, since it uses less digits than its factorization.

512313145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102462634.

The product of its digits is 1800, while the sum is 25.

The square root of 512313145 is about 22634.3355325488. The cubic root of 512313145 is about 800.1630631149.

The spelling of 512313145 in words is "five hundred twelve million, three hundred thirteen thousand, one hundred forty-five".