201553051 has 4 divisors (see below), whose sum is σ = 230346352. Its totient is φ = 172759752.

The previous prime is 201553043. The next prime is 201553067. The reversal of 201553051 is 150355102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201553051 - 2³ = 201553043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201553031) 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, 14396640 + ... + 14396653.

It is an arithmetic number, because the mean of its divisors is an integer number (57586588).

Almost surely, 2^201553051 is an apocalyptic number.

201553051 is a deficient number, since it is larger than the sum of its proper divisors (28793301).

201553051 is an equidigital number, since it uses as much as digits as its factorization.

201553051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28793300.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 201553051 is about 14196.9380853760. The cubic root of 201553051 is about 586.3133625518.

The spelling of 201553051 in words is "two hundred one million, five hundred fifty-three thousand, fifty-one".