520155453 has 4 divisors (see below), whose sum is σ = 693540608. Its totient is φ = 346770300.

The previous prime is 520155359. The next prime is 520155463. The reversal of 520155453 is 354551025.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 520155453 - 2¹⁴ = 520139069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 520155453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520155463) 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, 86692573 + ... + 86692578.

It is an arithmetic number, because the mean of its divisors is an integer number (173385152).

Almost surely, 2^520155453 is an apocalyptic number.

It is an amenable number.

520155453 is a deficient number, since it is larger than the sum of its proper divisors (173385155).

520155453 is a wasteful number, since it uses less digits than its factorization.

520155453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173385154.

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 520155453 is about 22806.9167797842. The cubic root of 520155453 is about 804.2252762829.

The spelling of 520155453 in words is "five hundred twenty million, one hundred fifty-five thousand, four hundred fifty-three".