52535285478 has 32 divisors (see below), whose sum is σ = 125725471200. Its totient is φ = 16164703008.

The previous prime is 52535285449. The next prime is 52535285479. The reversal of 52535285478 is 87458253525.

It is a happy number.

52535285478 is a `hidden beast` number, since 52 + 535 + 2 + 8 + 54 + 7 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52535285479) 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, 37417593 + ... + 37418996.

It is an arithmetic number, because the mean of its divisors is an integer number (3928920975).

Almost surely, 2^52535285478 is an apocalyptic number.

52535285478 is an abundant number, since it is smaller than the sum of its proper divisors (73190185722).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52535285478 is a wasteful number, since it uses less digits than its factorization.

52535285478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74836613 (or 74836607 counting only the distinct ones).

The product of its digits is 13440000, while the sum is 54.

The spelling of 52535285478 in words is "fifty-two billion, five hundred thirty-five million, two hundred eighty-five thousand, four hundred seventy-eight".