91330552 has 8 divisors (see below), whose sum is σ = 171244800. Its totient is φ = 45665272.

The previous prime is 91330537. The next prime is 91330559. The reversal of 91330552 is 25503319.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91330552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91330559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5708152 + ... + 5708167.

It is an arithmetic number, because the mean of its divisors is an integer number (21405600).

Almost surely, 2^91330552 is an apocalyptic number.

It is an amenable number.

91330552 is a deficient number, since it is larger than the sum of its proper divisors (79914248).

91330552 is a wasteful number, since it uses less digits than its factorization.

91330552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11416325 (or 11416321 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 91330552 is about 9556.7019415696. The cubic root of 91330552 is about 450.3381031076.

The spelling of 91330552 in words is "ninety-one million, three hundred thirty thousand, five hundred fifty-two".