101455643 has 4 divisors (see below), whose sum is σ = 107423640. Its totient is φ = 95487648.

The previous prime is 101455597. The next prime is 101455667. The reversal of 101455643 is 346554101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346554101 = 859 ⋅403439.

It is a cyclic number.

It is not a de Polignac number, because 101455643 - 2⁶ = 101455579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101455243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2983973 + ... + 2984006.

It is an arithmetic number, because the mean of its divisors is an integer number (26855910).

Almost surely, 2^101455643 is an apocalyptic number.

101455643 is a deficient number, since it is larger than the sum of its proper divisors (5967997).

101455643 is an equidigital number, since it uses as much as digits as its factorization.

101455643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5967996.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 101455643 is about 10072.5191982939. The cubic root of 101455643 is about 466.4002084871.

The spelling of 101455643 in words is "one hundred one million, four hundred fifty-five thousand, six hundred forty-three".