53321125112521 has 16 divisors (see below), whose sum is σ = 61052213109888. Its totient is φ = 45618501744000.

The previous prime is 53321125112449. The next prime is 53321125112557. The reversal of 53321125112521 is 12521152112335.

It is a cyclic number.

It is not a de Polignac number, because 53321125112521 - 2³³ = 53312535177929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53321125112581) 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, 33978621 + ... + 35513221.

It is an arithmetic number, because the mean of its divisors is an integer number (3815763319368).

Almost surely, 2^{53321125112521} is an apocalyptic number.

It is an amenable number.

53321125112521 is a deficient number, since it is larger than the sum of its proper divisors (7731087997367).

53321125112521 is a wasteful number, since it uses less digits than its factorization.

53321125112521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543872.

The product of its digits is 18000, while the sum is 34.

Adding to 53321125112521 its reverse (12521152112335), we get a palindrome (65842277224856).

The spelling of 53321125112521 in words is "fifty-three trillion, three hundred twenty-one billion, one hundred twenty-five million, one hundred twelve thousand, five hundred twenty-one".