801243497 has 2 divisors, whose sum is σ = 801243498. Its totient is φ = 801243496.

The previous prime is 801243463. The next prime is 801243529. The reversal of 801243497 is 794342108.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581581456 + 219662041 = 24116^2 + 14821^2 .

It is a cyclic number.

It is not a de Polignac number, because 801243497 - 2¹⁰ = 801242473 is a prime.

It is a super-2 number, since 2×801243497² = 1283982282969578018, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 801243497.

It is not a weakly prime, because it can be changed into another prime (801243427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400621748 + 400621749.

It is an arithmetic number, because the mean of its divisors is an integer number (400621749).

Almost surely, 2^801243497 is an apocalyptic number.

It is an amenable number.

801243497 is a deficient number, since it is larger than the sum of its proper divisors (1).

801243497 is an equidigital number, since it uses as much as digits as its factorization.

801243497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 801243497 is about 28306.2448410240. The cubic root of 801243497 is about 928.7985012111.

It can be divided in two parts, 80124 and 3497, that multiplied together give a triangular number (280193628 = T₂₃₆₇₂).

The spelling of 801243497 in words is "eight hundred one million, two hundred forty-three thousand, four hundred ninety-seven".