91183401 has 15 divisors (see below), whose sum is σ = 136340743. Its totient is φ = 60731640.

The previous prime is 91183399. The next prime is 91183409. The reversal of 91183401 is 10438119.

The square root of 91183401 is 9549.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 60047001 + 31136400 = 7749^2 + 5580^2 .

It is not a de Polignac number, because 91183401 - 2¹ = 91183399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91183409) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 85411 + ... + 86471.

Almost surely, 2^91183401 is an apocalyptic number.

91183401 is the 9549-th square number.

91183401 is the 4775-th centered octagonal number.

It is an amenable number.

91183401 is a deficient number, since it is larger than the sum of its proper divisors (45157342).

91183401 is an frugal number, since it uses more digits than its factorization.

91183401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The cubic root of 91183401 is about 450.0961128037.

The spelling of 91183401 in words is "ninety-one million, one hundred eighty-three thousand, four hundred one".