53720899 has 2 divisors, whose sum is σ = 53720900. Its totient is φ = 53720898.

The previous prime is 53720839. The next prime is 53720917. The reversal of 53720899 is 99802735.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53720899 - 2¹⁷ = 53589827 is a prime.

It is not a weakly prime, because it can be changed into another prime (53720839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26860449 + 26860450.

It is an arithmetic number, because the mean of its divisors is an integer number (26860450).

Almost surely, 2^53720899 is an apocalyptic number.

53720899 is a deficient number, since it is larger than the sum of its proper divisors (1).

53720899 is an equidigital number, since it uses as much as digits as its factorization.

53720899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 53720899 is about 7329.4542088753. The cubic root of 53720899 is about 377.3239949666.

The spelling of 53720899 in words is "fifty-three million, seven hundred twenty thousand, eight hundred ninety-nine".