90554388 has 24 divisors (see below), whose sum is σ = 216208608. Its totient is φ = 29482656.

The previous prime is 90554377. The next prime is 90554389. The reversal of 90554388 is 88345509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90554389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87231 + ... + 88262.

It is an arithmetic number, because the mean of its divisors is an integer number (9008692).

Almost surely, 2^90554388 is an apocalyptic number.

It is an amenable number.

90554388 is an abundant number, since it is smaller than the sum of its proper divisors (125654220).

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

90554388 is a wasteful number, since it uses less digits than its factorization.

90554388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175543 (or 175541 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 90554388 is about 9516.0069356847. The cubic root of 90554388 is about 449.0587535941.

The spelling of 90554388 in words is "ninety million, five hundred fifty-four thousand, three hundred eighty-eight".