91156052 has 24 divisors (see below), whose sum is σ = 172061736. Its totient is φ = 42006528.

The previous prime is 91156033. The next prime is 91156067. The reversal of 91156052 is 25065119.

It can be written as a sum of positive squares in 4 ways, for example, as 46185616 + 44970436 = 6796^2 + 6706^2 .

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, 52868 + ... + 54564.

It is an arithmetic number, because the mean of its divisors is an integer number (7169239).

Almost surely, 2^91156052 is an apocalyptic number.

It is an amenable number.

91156052 is a deficient number, since it is larger than the sum of its proper divisors (80905684).

91156052 is a wasteful number, since it uses less digits than its factorization.

91156052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2745 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 91156052 is about 9547.5678578369. The cubic root of 91156052 is about 450.0511085984.

The spelling of 91156052 in words is "ninety-one million, one hundred fifty-six thousand, fifty-two".