53878613 has 4 divisors (see below), whose sum is σ = 55131648. Its totient is φ = 52625580.

The previous prime is 53878609. The next prime is 53878631. The reversal of 53878613 is 31687835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53878613 - 2² = 53878609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53871613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626453 + ... + 626538.

It is an arithmetic number, because the mean of its divisors is an integer number (13782912).

Almost surely, 2^53878613 is an apocalyptic number.

It is an amenable number.

53878613 is a deficient number, since it is larger than the sum of its proper divisors (1253035).

53878613 is a wasteful number, since it uses less digits than its factorization.

53878613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253034.

The product of its digits is 120960, while the sum is 41.

The square root of 53878613 is about 7340.2052423621. The cubic root of 53878613 is about 377.6928839006.

The spelling of 53878613 in words is "fifty-three million, eight hundred seventy-eight thousand, six hundred thirteen".