201451501 has 4 divisors (see below), whose sum is σ = 204001600. Its totient is φ = 198901404.

The previous prime is 201451499. The next prime is 201451519. The reversal of 201451501 is 105154102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201451501 - 2¹ = 201451499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201451531) 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, 1274931 + ... + 1275088.

It is an arithmetic number, because the mean of its divisors is an integer number (51000400).

Almost surely, 2^201451501 is an apocalyptic number.

It is an amenable number.

201451501 is a deficient number, since it is larger than the sum of its proper divisors (2550099).

201451501 is an equidigital number, since it uses as much as digits as its factorization.

201451501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550098.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 201451501 is about 14193.3611593590. The cubic root of 201451501 is about 586.2148771092.

The spelling of 201451501 in words is "two hundred one million, four hundred fifty-one thousand, five hundred one".