361491 has 24 divisors (see below), whose sum is σ = 562176. Its totient is φ = 205920.

The previous prime is 361481. The next prime is 361499. The reversal of 361491 is 194163.

It is not a de Polignac number, because 361491 - 2⁷ = 361363 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 361491.

It is not an unprimeable number, because it can be changed into a prime (361499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11646 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (23424).

2³⁶¹⁴⁹¹ is an apocalyptic number.

361491 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

361491 is a deficient number, since it is larger than the sum of its proper divisors (200685).

361491 is a wasteful number, since it uses less digits than its factorization.

361491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 70 counting only the distinct ones).

The product of its digits is 648, while the sum is 24.

The square root of 361491 is about 601.2412161521. The cubic root of 361491 is about 71.2359405931.

The spelling of 361491 in words is "three hundred sixty-one thousand, four hundred ninety-one".