90454550 has 12 divisors (see below), whose sum is σ = 168245556. Its totient is φ = 36181800.

The previous prime is 90454547. The next prime is 90454571. The reversal of 90454550 is 5545409.

It is a happy number.

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, 904496 + ... + 904595.

It is an arithmetic number, because the mean of its divisors is an integer number (14020463).

Almost surely, 2^90454550 is an apocalyptic number.

90454550 is a deficient number, since it is larger than the sum of its proper divisors (77791006).

90454550 is a wasteful number, since it uses less digits than its factorization.

90454550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809103 (or 1809098 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 90454550 is about 9510.7596962598. The cubic root of 90454550 is about 448.8936608603.

Adding to 90454550 its reverse (5545409), we get a palindrome (95999959).

The spelling of 90454550 in words is "ninety million, four hundred fifty-four thousand, five hundred fifty".