11371491 has 6 divisors (see below), whose sum is σ = 16425500. Its totient is φ = 7580988.

The previous prime is 11371471. The next prime is 11371501. The reversal of 11371491 is 19417311.

It is not a de Polignac number, because 11371491 - 2¹⁴ = 11355107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11371421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 631741 + ... + 631758.

Almost surely, 2^11371491 is an apocalyptic number.

11371491 is a deficient number, since it is larger than the sum of its proper divisors (5054009).

11371491 is a wasteful number, since it uses less digits than its factorization.

11371491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263505 (or 1263502 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 11371491 is about 3372.1641419124. The cubic root of 11371491 is about 224.8739442055.

It can be divided in two parts, 1137 and 1491, that added together give a triangular number (2628 = T₇₂).

The spelling of 11371491 in words is "eleven million, three hundred seventy-one thousand, four hundred ninety-one".