90454500 has 72 divisors (see below), whose sum is σ = 285367992. Its totient is φ = 24120000.

The previous prime is 90454477. The next prime is 90454513. The reversal of 90454500 is 545409.

It can be written as a sum of positive squares in 4 ways, for example, as 7717284 + 82737216 = 2778^2 + 9096^2 .

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 23 ways as a sum of consecutive naturals, for example, 5551 + ... + 14550.

Almost surely, 2^90454500 is an apocalyptic number.

90454500 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90454500 is an abundant number, since it is smaller than the sum of its proper divisors (194913492).

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

90454500 is a wasteful number, since it uses less digits than its factorization.

90454500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20126 (or 20111 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 90454500 is about 9510.7570676577. The cubic root of 90454500 is about 448.8935781496.

Adding to 90454500 its reverse (545409), we get a palindrome (90999909).

The spelling of 90454500 in words is "ninety million, four hundred fifty-four thousand, five hundred".