162201551 has 2 divisors, whose sum is σ = 162201552. Its totient is φ = 162201550.

The previous prime is 162201541. The next prime is 162201563. The reversal of 162201551 is 155102261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 162201551 - 2¹⁰ = 162200527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162201541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81100775 + 81100776.

It is an arithmetic number, because the mean of its divisors is an integer number (81100776).

Almost surely, 2^162201551 is an apocalyptic number.

162201551 is a deficient number, since it is larger than the sum of its proper divisors (1).

162201551 is an equidigital number, since it uses as much as digits as its factorization.

162201551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 162201551 is about 12735.8372712594. The cubic root of 162201551 is about 545.3621597581.

It can be divided in two parts, 16220 and 1551, that added together give a palindrome (17771).

The spelling of 162201551 in words is "one hundred sixty-two million, two hundred one thousand, five hundred fifty-one".