855437545 has 4 divisors (see below), whose sum is σ = 1026525060. Its totient is φ = 684350032.

The previous prime is 855437537. The next prime is 855437549. The reversal of 855437545 is 545734558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545734558 = 2 ⋅272867279.

It can be written as a sum of positive squares in 2 ways, for example, as 349727401 + 505710144 = 18701^2 + 22488^2 .

It is a cyclic number.

It is not a de Polignac number, because 855437545 - 2³ = 855437537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 855437495 and 855437504.

It is not an unprimeable number, because it can be changed into a prime (855437549) 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, 85543750 + ... + 85543759.

It is an arithmetic number, because the mean of its divisors is an integer number (256631265).

Almost surely, 2^855437545 is an apocalyptic number.

It is an amenable number.

855437545 is a deficient number, since it is larger than the sum of its proper divisors (171087515).

855437545 is a wasteful number, since it uses less digits than its factorization.

855437545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171087514.

The product of its digits is 1680000, while the sum is 46.

The square root of 855437545 is about 29247.8639390982. The cubic root of 855437545 is about 949.2838721240.

The spelling of 855437545 in words is "eight hundred fifty-five million, four hundred thirty-seven thousand, five hundred forty-five".