91050552787 has 8 divisors (see below), whose sum is σ = 93531790352. Its totient is φ = 88570389600.

The previous prime is 91050552781. The next prime is 91050552823. The reversal of 91050552787 is 78725505019.

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 91050552787 - 2¹¹ = 91050550739 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 91050552787.

It is not an unprimeable number, because it can be changed into a prime (91050552781) 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, 95289 + ... + 437242.

It is an arithmetic number, because the mean of its divisors is an integer number (11691473794).

Almost surely, 2^91050552787 is an apocalyptic number.

91050552787 is a deficient number, since it is larger than the sum of its proper divisors (2481237565).

91050552787 is a wasteful number, since it uses less digits than its factorization.

91050552787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537189.

The product of its (nonzero) digits is 882000, while the sum is 49.

The spelling of 91050552787 in words is "ninety-one billion, fifty million, five hundred fifty-two thousand, seven hundred eighty-seven".