201451345 has 16 divisors (see below), whose sum is σ = 248415552. Its totient is φ = 156744000.

The previous prime is 201451301. The next prime is 201451351. The reversal of 201451345 is 543154102.

It is a happy number.

It is not a de Polignac number, because 201451345 - 2¹⁵ = 201418577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52099 + ... + 55831.

It is an arithmetic number, because the mean of its divisors is an integer number (15525972).

Almost surely, 2^201451345 is an apocalyptic number.

It is an amenable number.

201451345 is a deficient number, since it is larger than the sum of its proper divisors (46964207).

201451345 is a wasteful number, since it uses less digits than its factorization.

201451345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 201451345 is about 14193.3556638309. The cubic root of 201451345 is about 586.2147257915.

The spelling of 201451345 in words is "two hundred one million, four hundred fifty-one thousand, three hundred forty-five".