91534554 has 24 divisors (see below), whose sum is σ = 201044532. Its totient is φ = 30093120.

The previous prime is 91534519. The next prime is 91534561. The reversal of 91534554 is 45543519.

It can be written as a sum of positive squares in 2 ways, for example, as 85988529 + 5546025 = 9273^2 + 2355^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33517 + ... + 36144.

Almost surely, 2^91534554 is an apocalyptic number.

91534554 is an abundant number, since it is smaller than the sum of its proper divisors (109509978).

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

91534554 is a wasteful number, since it uses less digits than its factorization.

91534554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69742 (or 69739 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 91534554 is about 9567.3692308806. The cubic root of 91534554 is about 450.6731554868.

The spelling of 91534554 in words is "ninety-one million, five hundred thirty-four thousand, five hundred fifty-four".