90481550 has 12 divisors (see below), whose sum is σ = 168295776. Its totient is φ = 36192600.

The previous prime is 90481543. The next prime is 90481571. The reversal of 90481550 is 5518409.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 904766 + ... + 904865.

It is an arithmetic number, because the mean of its divisors is an integer number (14024648).

Almost surely, 2^90481550 is an apocalyptic number.

90481550 is a deficient number, since it is larger than the sum of its proper divisors (77814226).

90481550 is a wasteful number, since it uses less digits than its factorization.

90481550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809643 (or 1809638 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 90481550 is about 9512.1790353210. The cubic root of 90481550 is about 448.9383202063.

Adding to 90481550 its reverse (5518409), we get a palindrome (95999959).

The spelling of 90481550 in words is "ninety million, four hundred eighty-one thousand, five hundred fifty".