162651481 has 2 divisors, whose sum is σ = 162651482. Its totient is φ = 162651480.

The previous prime is 162651479. The next prime is 162651491. The reversal of 162651481 is 184156261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137851081 + 24800400 = 11741^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 162651481 - 2¹ = 162651479 is a prime.

It is a super-2 number, since 2×162651481² = 52911008542986722, which contains 22 as substring.

Together with 162651479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (162651491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81325740 + 81325741.

It is an arithmetic number, because the mean of its divisors is an integer number (81325741).

Almost surely, 2^162651481 is an apocalyptic number.

It is an amenable number.

162651481 is a deficient number, since it is larger than the sum of its proper divisors (1).

162651481 is an equidigital number, since it uses as much as digits as its factorization.

162651481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 34.

The square root of 162651481 is about 12753.4889736103. The cubic root of 162651481 is about 545.8659532642.

The spelling of 162651481 in words is "one hundred sixty-two million, six hundred fifty-one thousand, four hundred eighty-one".