85503550 has 24 divisors (see below), whose sum is σ = 173495592. Its totient is φ = 31092000.

The previous prime is 85503547. The next prime is 85503617. The reversal of 85503550 is 5530558.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77181 + ... + 78280.

It is an arithmetic number, because the mean of its divisors is an integer number (7228983).

Almost surely, 2^85503550 is an apocalyptic number.

85503550 is an abundant number, since it is smaller than the sum of its proper divisors (87992042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85503550 is a wasteful number, since it uses less digits than its factorization.

85503550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155484 (or 155479 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 85503550 is about 9246.8129644759. The cubic root of 85503550 is about 440.5495028506.

It can be divided in two parts, 8550 and 3550, that added together give a square (12100 = 110²).

The spelling of 85503550 in words is "eighty-five million, five hundred three thousand, five hundred fifty".