151643 has 2 divisors, whose sum is σ = 151644. Its totient is φ = 151642.

The previous prime is 151637. The next prime is 151651. The reversal of 151643 is 346151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151643 - 2⁶ = 151579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (151603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75821 + 75822.

It is an arithmetic number, because the mean of its divisors is an integer number (75822).

2¹⁵¹⁶⁴³ is an apocalyptic number.

151643 is a deficient number, since it is larger than the sum of its proper divisors (1).

151643 is an equidigital number, since it uses as much as digits as its factorization.

151643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 151643 is about 389.4136618045. The cubic root of 151643 is about 53.3262186690.

Adding to 151643 its reverse (346151), we get a palindrome (497794).

The spelling of 151643 in words is "one hundred fifty-one thousand, six hundred forty-three".