91533542 has 16 divisors (see below), whose sum is σ = 145916640. Its totient is φ = 42914688.

The previous prime is 91533529. The next prime is 91533569. The reversal of 91533542 is 24533519.

It is a super-2 number, since 2×91533542² = 16756778622131528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91533499 and 91533508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4559 + ... + 14277.

It is an arithmetic number, because the mean of its divisors is an integer number (9119790).

Almost surely, 2^91533542 is an apocalyptic number.

91533542 is a deficient number, since it is larger than the sum of its proper divisors (54383098).

91533542 is a wasteful number, since it uses less digits than its factorization.

91533542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10015.

The product of its digits is 16200, while the sum is 32.

The square root of 91533542 is about 9567.3163426323. The cubic root of 91533542 is about 450.6714946098.

The spelling of 91533542 in words is "ninety-one million, five hundred thirty-three thousand, five hundred forty-two".