91320452 has 6 divisors (see below), whose sum is σ = 159810798. Its totient is φ = 45660224.

The previous prime is 91320371. The next prime is 91320469. The reversal of 91320452 is 25402319.

It can be written as a sum of positive squares in only one way, i.e., 59691076 + 31629376 = 7726^2 + 5624^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11415053 + ... + 11415060.

It is an arithmetic number, because the mean of its divisors is an integer number (26635133).

Almost surely, 2^91320452 is an apocalyptic number.

It is an amenable number.

91320452 is a deficient number, since it is larger than the sum of its proper divisors (68490346).

91320452 is a wasteful number, since it uses less digits than its factorization.

91320452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22830117 (or 22830115 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 91320452 is about 9556.1735019829. The cubic root of 91320452 is about 450.3215019359.

The spelling of 91320452 in words is "ninety-one million, three hundred twenty thousand, four hundred fifty-two".