201550465 has 8 divisors (see below), whose sum is σ = 247759848. Its totient is φ = 157307520.

The previous prime is 201550441. The next prime is 201550471. The reversal of 201550465 is 564055102.

It can be written as a sum of positive squares in 4 ways, for example, as 1723969 + 199826496 = 1313^2 + 14136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201550465 - 2⁷ = 201550337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491382 + ... + 491791.

It is an arithmetic number, because the mean of its divisors is an integer number (30969981).

Almost surely, 2^201550465 is an apocalyptic number.

It is an amenable number.

201550465 is a deficient number, since it is larger than the sum of its proper divisors (46209383).

201550465 is an equidigital number, since it uses as much as digits as its factorization.

201550465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983219.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 201550465 is about 14196.8470091073. The cubic root of 201550465 is about 586.3108550022.

The spelling of 201550465 in words is "two hundred one million, five hundred fifty thousand, four hundred sixty-five".