53497551523 has 24 divisors (see below), whose sum is σ = 60560711120. Its totient is φ = 46973234880.

The previous prime is 53497551521. The next prime is 53497551557. The reversal of 53497551523 is 32515579435.

It is not a de Polignac number, because 53497551523 - 2¹ = 53497551521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53497551521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1223248 + ... + 1266226.

Almost surely, 2^53497551523 is an apocalyptic number.

53497551523 is a deficient number, since it is larger than the sum of its proper divisors (7063159597).

53497551523 is a wasteful number, since it uses less digits than its factorization.

53497551523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43219 (or 43196 counting only the distinct ones).

The product of its digits is 2835000, while the sum is 49.

The spelling of 53497551523 in words is "fifty-three billion, four hundred ninety-seven million, five hundred fifty-one thousand, five hundred twenty-three".