162257551 has 2 divisors, whose sum is σ = 162257552. Its totient is φ = 162257550.

The previous prime is 162257531. The next prime is 162257569. The reversal of 162257551 is 155752261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162257551 - 2⁵ = 162257519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162257531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81128775 + 81128776.

It is an arithmetic number, because the mean of its divisors is an integer number (81128776).

Almost surely, 2^162257551 is an apocalyptic number.

162257551 is a deficient number, since it is larger than the sum of its proper divisors (1).

162257551 is an equidigital number, since it uses as much as digits as its factorization.

162257551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 34.

The square root of 162257551 is about 12738.0356020856. The cubic root of 162257551 is about 545.4249145360.

The spelling of 162257551 in words is "one hundred sixty-two million, two hundred fifty-seven thousand, five hundred fifty-one".