90213543 has 48 divisors (see below), whose sum is σ = 159134976. Its totient is φ = 48072960.

The previous prime is 90213533. The next prime is 90213559. The reversal of 90213543 is 34531209.

It is not a de Polignac number, because 90213543 - 2⁶ = 90213479 is a prime.

It is a super-2 number, since 2×90213543² = 16276966681225698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90213533) 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, 139980 + ... + 140622.

It is an arithmetic number, because the mean of its divisors is an integer number (3315312).

Almost surely, 2^90213543 is an apocalyptic number.

90213543 is a deficient number, since it is larger than the sum of its proper divisors (68921433).

90213543 is a wasteful number, since it uses less digits than its factorization.

90213543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804 (or 801 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 90213543 is about 9498.0810167107. The cubic root of 90213543 is about 448.4946290040.

The spelling of 90213543 in words is "ninety million, two hundred thirteen thousand, five hundred forty-three".