201551010 has 16 divisors (see below), whose sum is σ = 483722496. Its totient is φ = 53746928.

The previous prime is 201551003. The next prime is 201551011. The reversal of 201551010 is 10155102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (201551011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3359154 + ... + 3359213.

It is an arithmetic number, because the mean of its divisors is an integer number (30232656).

Almost surely, 2^201551010 is an apocalyptic number.

201551010 is an abundant number, since it is smaller than the sum of its proper divisors (282171486).

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

201551010 is a wasteful number, since it uses less digits than its factorization.

201551010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6718377.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 201551010 is about 14196.8662034972. The cubic root of 201551010 is about 586.3113834705.

The spelling of 201551010 in words is "two hundred one million, five hundred fifty-one thousand, ten".