201451005 has 72 divisors (see below), whose sum is σ = 410596992. Its totient is φ = 91094976.

The previous prime is 201450983. The next prime is 201451013. The reversal of 201451005 is 500154102.

It is not a de Polignac number, because 201451005 - 2⁶ = 201450941 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 226672 + ... + 227558.

It is an arithmetic number, because the mean of its divisors is an integer number (5702736).

Almost surely, 2^201451005 is an apocalyptic number.

It is an amenable number.

201451005 is an abundant number, since it is smaller than the sum of its proper divisors (209145987).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201451005 is a wasteful number, since it uses less digits than its factorization.

201451005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 201451005 is about 14193.3436863905. The cubic root of 201451005 is about 586.2143959962.

The spelling of 201451005 in words is "two hundred one million, four hundred fifty-one thousand, five".