90518450 has 48 divisors (see below), whose sum is σ = 189630720. Its totient is φ = 31848000.

The previous prime is 90518431. The next prime is 90518471. The reversal of 90518450 is 5481509.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14396 + ... + 19704.

It is an arithmetic number, because the mean of its divisors is an integer number (3950640).

Almost surely, 2^90518450 is an apocalyptic number.

90518450 is an abundant number, since it is smaller than the sum of its proper divisors (99112270).

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

90518450 is a wasteful number, since it uses less digits than its factorization.

90518450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5363 (or 5358 counting only the distinct ones).

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

The square root of 90518450 is about 9514.1184562733. The cubic root of 90518450 is about 448.9993402801. Note that the first 3 decimals are identical.

Adding to 90518450 its reverse (5481509), we get a palindrome (95999959).

The spelling of 90518450 in words is "ninety million, five hundred eighteen thousand, four hundred fifty".