251232201 has 24 divisors (see below), whose sum is σ = 401315616. Its totient is φ = 150171840.

The previous prime is 251232181. The next prime is 251232211. The reversal of 251232201 is 102232152.

It is not a de Polignac number, because 251232201 - 2⁵ = 251232169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251232211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10155 + ... + 24608.

It is an arithmetic number, because the mean of its divisors is an integer number (16721484).

Almost surely, 2^251232201 is an apocalyptic number.

It is an amenable number.

251232201 is a deficient number, since it is larger than the sum of its proper divisors (150083415).

251232201 is a wasteful number, since it uses less digits than its factorization.

251232201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34853 (or 34850 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 251232201 is about 15850.3060222823. The cubic root of 251232201 is about 630.9938131623.

Adding to 251232201 its reverse (102232152), we get a palindrome (353464353).

The spelling of 251232201 in words is "two hundred fifty-one million, two hundred thirty-two thousand, two hundred one".