53778879 has 48 divisors (see below), whose sum is σ = 98302464. Its totient is φ = 27518400.

The previous prime is 53778869. The next prime is 53778889. The reversal of 53778879 is 97887735.

It is an interprime number because it is at equal distance from previous prime (53778869) and next prime (53778889).

It is not a de Polignac number, because 53778879 - 2⁴ = 53778863 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53778869) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48657 + ... + 49749.

It is an arithmetic number, because the mean of its divisors is an integer number (2047968).

Almost surely, 2^53778879 is an apocalyptic number.

53778879 is a deficient number, since it is larger than the sum of its proper divisors (44523585).

53778879 is a wasteful number, since it uses less digits than its factorization.

53778879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1185 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 53778879 is about 7333.4084162823. The cubic root of 53778879 is about 377.4596924932.

The spelling of 53778879 in words is "fifty-three million, seven hundred seventy-eight thousand, eight hundred seventy-nine".