523240145 has 8 divisors (see below), whose sum is σ = 660935040. Its totient is φ = 396560880.

The previous prime is 523240141. The next prime is 523240163. The reversal of 523240145 is 541042325.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 523240145 - 2² = 523240141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (523240141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2753801 + ... + 2753990.

It is an arithmetic number, because the mean of its divisors is an integer number (82616880).

Almost surely, 2^523240145 is an apocalyptic number.

It is an amenable number.

523240145 is a deficient number, since it is larger than the sum of its proper divisors (137694895).

523240145 is a wasteful number, since it uses less digits than its factorization.

523240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507815.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 523240145 is about 22874.4430533292. The cubic root of 523240145 is about 805.8119169655.

The spelling of 523240145 in words is "five hundred twenty-three million, two hundred forty thousand, one hundred forty-five".