523450055153521 has 16 divisors (see below), whose sum is σ = 569224790585424. Its totient is φ = 479340349323264.

The previous prime is 523450055153497. The next prime is 523450055153567. The reversal of 523450055153521 is 125351550054325.

It can be written as a sum of positive squares in 8 ways, for example, as 370022195593521 + 153427859560000 = 19235961^2 + 12386600^2 .

It is a cyclic number.

It is not a de Polignac number, because 523450055153521 - 2¹¹ = 523450055151473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523450055153591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87409261 + ... + 93205573.

It is an arithmetic number, because the mean of its divisors is an integer number (35576549411589).

Almost surely, 2^{523450055153521} is an apocalyptic number.

It is an amenable number.

523450055153521 is a deficient number, since it is larger than the sum of its proper divisors (45774735431903).

523450055153521 is a wasteful number, since it uses less digits than its factorization.

523450055153521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5939940.

The product of its (nonzero) digits is 2250000, while the sum is 46.

The spelling of 523450055153521 in words is "five hundred twenty-three trillion, four hundred fifty billion, fifty-five million, one hundred fifty-three thousand, five hundred twenty-one".