32401491 has 4 divisors (see below), whose sum is σ = 43201992. Its totient is φ = 21600992.

The previous prime is 32401483. The next prime is 32401513. The reversal of 32401491 is 19410423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19410423 = 3 ⋅6470141.

It is a cyclic number.

It is not a de Polignac number, because 32401491 - 2³ = 32401483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (32401451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5400246 + ... + 5400251.

It is an arithmetic number, because the mean of its divisors is an integer number (10800498).

Almost surely, 2^32401491 is an apocalyptic number.

32401491 is a deficient number, since it is larger than the sum of its proper divisors (10800501).

32401491 is a wasteful number, since it uses less digits than its factorization.

32401491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10800500.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 32401491 is about 5692.2307577961. The cubic root of 32401491 is about 318.8024608771.

The spelling of 32401491 in words is "thirty-two million, four hundred one thousand, four hundred ninety-one".