53220823 has 2 divisors, whose sum is σ = 53220824. Its totient is φ = 53220822.

The previous prime is 53220803. The next prime is 53220833. The reversal of 53220823 is 32802235.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53220823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53220803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26610411 + 26610412.

It is an arithmetic number, because the mean of its divisors is an integer number (26610412).

Almost surely, 2^53220823 is an apocalyptic number.

53220823 is a deficient number, since it is larger than the sum of its proper divisors (1).

53220823 is an equidigital number, since it uses as much as digits as its factorization.

53220823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 53220823 is about 7295.2603106401. The cubic root of 53220823 is about 376.1495345130.

The spelling of 53220823 in words is "fifty-three million, two hundred twenty thousand, eight hundred twenty-three".