85770550 has 12 divisors (see below), whose sum is σ = 159533316. Its totient is φ = 34308200.

The previous prime is 85770539. The next prime is 85770563. The reversal of 85770550 is 5507758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 857656 + ... + 857755.

It is an arithmetic number, because the mean of its divisors is an integer number (13294443).

Almost surely, 2^85770550 is an apocalyptic number.

85770550 is a deficient number, since it is larger than the sum of its proper divisors (73762766).

85770550 is a wasteful number, since it uses less digits than its factorization.

85770550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715423 (or 1715418 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 85770550 is about 9261.2391179582. The cubic root of 85770550 is about 441.0075910136.

It can be divided in two parts, 85770 and 550, that added together give a triangular number (86320 = T₄₁₅).

The spelling of 85770550 in words is "eighty-five million, seven hundred seventy thousand, five hundred fifty".