53406779 has 2 divisors, whose sum is σ = 53406780. Its totient is φ = 53406778.

The previous prime is 53406763. The next prime is 53406823. The reversal of 53406779 is 97760435.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53406779 - 2⁴ = 53406763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53406179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26703389 + 26703390.

It is an arithmetic number, because the mean of its divisors is an integer number (26703390).

Almost surely, 2^53406779 is an apocalyptic number.

53406779 is a deficient number, since it is larger than the sum of its proper divisors (1).

53406779 is an equidigital number, since it uses as much as digits as its factorization.

53406779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 53406779 is about 7307.9941844531. The cubic root of 53406779 is about 376.5871198437.

The spelling of 53406779 in words is "fifty-three million, four hundred six thousand, seven hundred seventy-nine".