523145107 has 4 divisors (see below), whose sum is σ = 550679080. Its totient is φ = 495611136.

The previous prime is 523145101. The next prime is 523145159. The reversal of 523145107 is 701541325.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 523145107 - 2¹⁵ = 523112339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523145101) 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, 13766958 + ... + 13766995.

It is an arithmetic number, because the mean of its divisors is an integer number (137669770).

Almost surely, 2^523145107 is an apocalyptic number.

523145107 is a deficient number, since it is larger than the sum of its proper divisors (27533973).

523145107 is a wasteful number, since it uses less digits than its factorization.

523145107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27533972.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 523145107 is about 22872.3655750777. The cubic root of 523145107 is about 805.7631265004.

The spelling of 523145107 in words is "five hundred twenty-three million, one hundred forty-five thousand, one hundred seven".