90054455 has 4 divisors (see below), whose sum is σ = 108065352. Its totient is φ = 72043560.

The previous prime is 90054451. The next prime is 90054463. The reversal of 90054455 is 55445009.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90054455 - 2² = 90054451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90054451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9005441 + ... + 9005450.

It is an arithmetic number, because the mean of its divisors is an integer number (27016338).

Almost surely, 2^90054455 is an apocalyptic number.

90054455 is a deficient number, since it is larger than the sum of its proper divisors (18010897).

90054455 is a wasteful number, since it uses less digits than its factorization.

90054455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18010896.

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

The square root of 90054455 is about 9489.7025770042. The cubic root of 90054455 is about 448.2308397275.

It can be divided in two parts, 90054 and 455, that added together give a palindrome (90509).

The spelling of 90054455 in words is "ninety million, fifty-four thousand, four hundred fifty-five".