523054557421 has 16 divisors (see below), whose sum is σ = 591483384000. Its totient is φ = 458172265600.

The previous prime is 523054557401. The next prime is 523054557433. The reversal of 523054557421 is 124755450325.

It is a cyclic number.

It is not a de Polignac number, because 523054557421 - 2¹⁵ = 523054524653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523054557401) 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, 1513096 + ... + 1826353.

It is an arithmetic number, because the mean of its divisors is an integer number (36967711500).

Almost surely, 2^523054557421 is an apocalyptic number.

It is an amenable number.

523054557421 is a deficient number, since it is larger than the sum of its proper divisors (68428826579).

523054557421 is a wasteful number, since it uses less digits than its factorization.

523054557421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339980.

The product of its (nonzero) digits is 840000, while the sum is 43.

The spelling of 523054557421 in words is "five hundred twenty-three billion, fifty-four million, five hundred fifty-seven thousand, four hundred twenty-one".