91903053 has 8 divisors (see below), whose sum is σ = 133677216. Its totient is φ = 55698800.

The previous prime is 91903033. The next prime is 91903069. The reversal of 91903053 is 35030919.

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 91903053 - 2⁹ = 91902541 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91903053.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91903033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392438 + ... + 1392503.

It is an arithmetic number, because the mean of its divisors is an integer number (16709652).

Almost surely, 2^91903053 is an apocalyptic number.

It is an amenable number.

91903053 is a deficient number, since it is larger than the sum of its proper divisors (41774163).

91903053 is a wasteful number, since it uses less digits than its factorization.

91903053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2784955.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 91903053 is about 9586.6080028340. The cubic root of 91903053 is about 451.2771177397.

The spelling of 91903053 in words is "ninety-one million, nine hundred three thousand, fifty-three".