53505878 has 4 divisors (see below), whose sum is σ = 80258820. Its totient is φ = 26752938.

The previous prime is 53505877. The next prime is 53505883. The reversal of 53505878 is 87850535.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53505871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13376468 + ... + 13376471.

It is an arithmetic number, because the mean of its divisors is an integer number (20064705).

Almost surely, 2^53505878 is an apocalyptic number.

53505878 is a deficient number, since it is larger than the sum of its proper divisors (26752942).

53505878 is a wasteful number, since it uses less digits than its factorization.

53505878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26752941.

The product of its (nonzero) digits is 168000, while the sum is 41.

The square root of 53505878 is about 7314.7712199357. The cubic root of 53505878 is about 376.8199014541.

The spelling of 53505878 in words is "fifty-three million, five hundred five thousand, eight hundred seventy-eight".