91007452 has 12 divisors (see below), whose sum is σ = 164755080. Its totient is φ = 43934576.

The previous prime is 91007431. The next prime is 91007453. The reversal of 91007452 is 25470019.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91007452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91007453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 392158 + ... + 392389.

It is an arithmetic number, because the mean of its divisors is an integer number (13729590).

Almost surely, 2^91007452 is an apocalyptic number.

It is an amenable number.

91007452 is a deficient number, since it is larger than the sum of its proper divisors (73747628).

91007452 is a wasteful number, since it uses less digits than its factorization.

91007452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784580 (or 784578 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 91007452 is about 9539.7825971036. The cubic root of 91007452 is about 449.8064220897.

The spelling of 91007452 in words is "ninety-one million, seven thousand, four hundred fifty-two".