850405545 has 72 divisors (see below), whose sum is σ = 1655192448. Its totient is φ = 403423680.

The previous prime is 850405537. The next prime is 850405561. The reversal of 850405545 is 545504058.

It is not a de Polignac number, because 850405545 - 2³ = 850405537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 254254 + ... + 257576.

It is an arithmetic number, because the mean of its divisors is an integer number (22988784).

Almost surely, 2^850405545 is an apocalyptic number.

It is an amenable number.

850405545 is a deficient number, since it is larger than the sum of its proper divisors (804786903).

850405545 is a wasteful number, since it uses less digits than its factorization.

850405545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403 (or 3389 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The square root of 850405545 is about 29161.7136842127. The cubic root of 850405545 is about 947.4188641732.

The spelling of 850405545 in words is "eight hundred fifty million, four hundred five thousand, five hundred forty-five".