145651643 has 2 divisors, whose sum is σ = 145651644. Its totient is φ = 145651642.

The previous prime is 145651633. The next prime is 145651661. The reversal of 145651643 is 346156541.

It is a weak prime.

It is an emirp because it is prime and its reverse (346156541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145651643 - 2¹⁰ = 145650619 is a prime.

It is a super-2 number, since 2×145651643² = 42428802217198898, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145651603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72825821 + 72825822.

It is an arithmetic number, because the mean of its divisors is an integer number (72825822).

Almost surely, 2^145651643 is an apocalyptic number.

145651643 is a deficient number, since it is larger than the sum of its proper divisors (1).

145651643 is an equidigital number, since it uses as much as digits as its factorization.

145651643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 35.

The square root of 145651643 is about 12068.6222494533. The cubic root of 145651643 is about 526.1446143934.

The spelling of 145651643 in words is "one hundred forty-five million, six hundred fifty-one thousand, six hundred forty-three".