91372053 has 8 divisors (see below), whose sum is σ = 124128288. Its totient is φ = 59765264.

The previous prime is 91372049. The next prime is 91372091. The reversal of 91372053 is 35027319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91372053 - 2² = 91372049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91372053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91372003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287175 + ... + 287492.

It is an arithmetic number, because the mean of its divisors is an integer number (15516036).

Almost surely, 2^91372053 is an apocalyptic number.

It is an amenable number.

91372053 is a deficient number, since it is larger than the sum of its proper divisors (32756235).

91372053 is a wasteful number, since it uses less digits than its factorization.

91372053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574723.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 91372053 is about 9558.8729984240. The cubic root of 91372053 is about 450.4063046424.

The spelling of 91372053 in words is "ninety-one million, three hundred seventy-two thousand, fifty-three".