90720059 has 2 divisors, whose sum is σ = 90720060. Its totient is φ = 90720058.

The previous prime is 90720029. The next prime is 90720101. The reversal of 90720059 is 95002709.

It is a weak prime.

It is an emirp because it is prime and its reverse (95002709) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90720059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90720029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45360029 + 45360030.

It is an arithmetic number, because the mean of its divisors is an integer number (45360030).

Almost surely, 2^90720059 is an apocalyptic number.

90720059 is a deficient number, since it is larger than the sum of its proper divisors (1).

90720059 is an equidigital number, since it uses as much as digits as its factorization.

90720059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 90720059 is about 9524.7078170409. The cubic root of 90720059 is about 449.3324406413.

The spelling of 90720059 in words is "ninety million, seven hundred twenty thousand, fifty-nine".