53250739521 has 32 divisors (see below), whose sum is σ = 83948544000. Its totient is φ = 29381667840.

The previous prime is 53250739511. The next prime is 53250739537. The reversal of 53250739521 is 12593705235.

It is not a de Polignac number, because 53250739521 - 2⁷ = 53250739393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53250739511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201210 + ... + 383388.

It is an arithmetic number, because the mean of its divisors is an integer number (2623392000).

Almost surely, 2^53250739521 is an apocalyptic number.

It is an amenable number.

53250739521 is a deficient number, since it is larger than the sum of its proper divisors (30697804479).

53250739521 is a wasteful number, since it uses less digits than its factorization.

53250739521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182669.

The product of its (nonzero) digits is 283500, while the sum is 42.

The spelling of 53250739521 in words is "fifty-three billion, two hundred fifty million, seven hundred thirty-nine thousand, five hundred twenty-one".