91025103 has 16 divisors (see below), whose sum is σ = 130889696. Its totient is φ = 55935360.

The previous prime is 91025101. The next prime is 91025107. The reversal of 91025103 is 30152019.

It is not a de Polignac number, because 91025103 - 2¹ = 91025101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91025103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91025101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37713 + ... + 40053.

It is an arithmetic number, because the mean of its divisors is an integer number (8180606).

Almost surely, 2^91025103 is an apocalyptic number.

91025103 is a deficient number, since it is larger than the sum of its proper divisors (39864593).

91025103 is a wasteful number, since it uses less digits than its factorization.

91025103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3354.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 91025103 is about 9540.7076781547. The cubic root of 91025103 is about 449.8355003675.

The spelling of 91025103 in words is "ninety-one million, twenty-five thousand, one hundred three".