101920573 has 2 divisors, whose sum is σ = 101920574. Its totient is φ = 101920572.

The previous prime is 101920549. The next prime is 101920583. The reversal of 101920573 is 375029101.

It is the 4122-nd star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58400164 + 43520409 = 7642^2 + 6597^2 .

It is a cyclic number.

It is not a de Polignac number, because 101920573 - 2¹³ = 101912381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101920583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50960286 + 50960287.

It is an arithmetic number, because the mean of its divisors is an integer number (50960287).

Almost surely, 2^101920573 is an apocalyptic number.

It is an amenable number.

101920573 is a deficient number, since it is larger than the sum of its proper divisors (1).

101920573 is an equidigital number, since it uses as much as digits as its factorization.

101920573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 101920573 is about 10095.5719501175. The cubic root of 101920573 is about 467.1115638739. Note that the first 3 decimals are identical.

Adding to 101920573 its reverse (375029101), we get a palindrome (476949674).

The spelling of 101920573 in words is "one hundred one million, nine hundred twenty thousand, five hundred seventy-three".