201451403 has 4 divisors (see below), whose sum is σ = 201481488. Its totient is φ = 201421320.

The previous prime is 201451399. The next prime is 201451477. The reversal of 201451403 is 304154102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 201451403 - 2² = 201451399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201451493) 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 3 ways as a sum of consecutive naturals, for example, 50 + ... + 20072.

It is an arithmetic number, because the mean of its divisors is an integer number (50370372).

Almost surely, 2^201451403 is an apocalyptic number.

201451403 is a deficient number, since it is larger than the sum of its proper divisors (30085).

201451403 is a wasteful number, since it uses less digits than its factorization.

201451403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30084.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 201451403 is about 14193.3577070403. The cubic root of 201451403 is about 586.2147820507.

The spelling of 201451403 in words is "two hundred one million, four hundred fifty-one thousand, four hundred three".