85923553 has 2 divisors, whose sum is σ = 85923554. Its totient is φ = 85923552.

The previous prime is 85923533. The next prime is 85923557. The reversal of 85923553 is 35532958.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43191184 + 42732369 = 6572^2 + 6537^2 .

It is a cyclic number.

It is not a de Polignac number, because 85923553 - 2¹⁷ = 85792481 is a prime.

It is not a weakly prime, because it can be changed into another prime (85923557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42961776 + 42961777.

It is an arithmetic number, because the mean of its divisors is an integer number (42961777).

Almost surely, 2^85923553 is an apocalyptic number.

It is an amenable number.

85923553 is a deficient number, since it is larger than the sum of its proper divisors (1).

85923553 is an equidigital number, since it uses as much as digits as its factorization.

85923553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162000, while the sum is 40.

The square root of 85923553 is about 9269.4958331076. The cubic root of 85923553 is about 441.2696677669.

The spelling of 85923553 in words is "eighty-five million, nine hundred twenty-three thousand, five hundred fifty-three".