91493051 has 12 divisors (see below), whose sum is σ = 99474408. Its totient is φ = 84112704.

The previous prime is 91493047. The next prime is 91493063. The reversal of 91493051 is 15039419.

It is not a de Polignac number, because 91493051 - 2² = 91493047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91492999 and 91493017.

It is not an unprimeable number, because it can be changed into a prime (91493021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46871 + ... + 48783.

It is an arithmetic number, because the mean of its divisors is an integer number (8289534).

Almost surely, 2^91493051 is an apocalyptic number.

91493051 is a deficient number, since it is larger than the sum of its proper divisors (7981357).

91493051 is a wasteful number, since it uses less digits than its factorization.

91493051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 91493051 is about 9565.1999979091. The cubic root of 91493051 is about 450.6050314295.

The spelling of 91493051 in words is "ninety-one million, four hundred ninety-three thousand, fifty-one".