201251251 has 4 divisors (see below), whose sum is σ = 206690512. Its totient is φ = 195811992.

The previous prime is 201251233. The next prime is 201251257. The reversal of 201251251 is 152152102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152152102 = 2 ⋅76076051.

It is not a de Polignac number, because 201251251 - 2²⁵ = 167696819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201251257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2719575 + ... + 2719648.

It is an arithmetic number, because the mean of its divisors is an integer number (51672628).

Almost surely, 2^201251251 is an apocalyptic number.

201251251 is a deficient number, since it is larger than the sum of its proper divisors (5439261).

201251251 is an equidigital number, since it uses as much as digits as its factorization.

201251251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5439260.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 201251251 is about 14186.3050509990. The cubic root of 201251251 is about 586.0205731924.

The spelling of 201251251 in words is "two hundred one million, two hundred fifty-one thousand, two hundred fifty-one".