53878247 has 2 divisors, whose sum is σ = 53878248. Its totient is φ = 53878246.

The previous prime is 53878211. The next prime is 53878249. The reversal of 53878247 is 74287835.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53878247 - 2⁸ = 53877991 is a prime.

Together with 53878249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53878198 and 53878207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53878249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26939123 + 26939124.

It is an arithmetic number, because the mean of its divisors is an integer number (26939124).

Almost surely, 2^53878247 is an apocalyptic number.

53878247 is a deficient number, since it is larger than the sum of its proper divisors (1).

53878247 is an equidigital number, since it uses as much as digits as its factorization.

53878247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 44.

The square root of 53878247 is about 7340.1803111368. The cubic root of 53878247 is about 377.6920286700.

The spelling of 53878247 in words is "fifty-three million, eight hundred seventy-eight thousand, two hundred forty-seven".