83355445 has 4 divisors (see below), whose sum is σ = 100026540. Its totient is φ = 66684352.

The previous prime is 83355439. The next prime is 83355449. The reversal of 83355445 is 54455338.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59089969 + 24265476 = 7687^2 + 4926^2 .

It is a cyclic number.

It is not a de Polignac number, because 83355445 - 2⁷ = 83355317 is a prime.

It is a super-2 number, since 2×83355445² = 13896260422296050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83355449) 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, 8335540 + ... + 8335549.

It is an arithmetic number, because the mean of its divisors is an integer number (25006635).

Almost surely, 2^83355445 is an apocalyptic number.

It is an amenable number.

83355445 is a deficient number, since it is larger than the sum of its proper divisors (16671095).

83355445 is a wasteful number, since it uses less digits than its factorization.

83355445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16671094.

The product of its digits is 144000, while the sum is 37.

The square root of 83355445 is about 9129.9203172865. The cubic root of 83355445 is about 436.8288615918.

The spelling of 83355445 in words is "eighty-three million, three hundred fifty-five thousand, four hundred forty-five".