90034581 has 48 divisors (see below), whose sum is σ = 155160576. Its totient is φ = 45384768.

The previous prime is 90034573. The next prime is 90034697. The reversal of 90034581 is 18543009.

It is not a de Polignac number, because 90034581 - 2³ = 90034573 is a prime.

It is a super-2 number, since 2×90034581² = 16212451551691122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90034501) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81076 + ... + 82178.

It is an arithmetic number, because the mean of its divisors is an integer number (3232512).

Almost surely, 2^90034581 is an apocalyptic number.

90034581 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

90034581 is a deficient number, since it is larger than the sum of its proper divisors (65125995).

90034581 is a wasteful number, since it uses less digits than its factorization.

90034581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1149 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 90034581 is about 9488.6553841943. The cubic root of 90034581 is about 448.1978641422.

The spelling of 90034581 in words is "ninety million, thirty-four thousand, five hundred eighty-one".