251104001 has 4 divisors (see below), whose sum is σ = 252405252. Its totient is φ = 249802752.

The previous prime is 251103959. The next prime is 251104031. The reversal of 251104001 is 100401152.

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

It can be written as a sum of positive squares in 2 ways, for example, as 108659776 + 142444225 = 10424^2 + 11935^2 .

It is a cyclic number.

It is not a de Polignac number, because 251104001 - 2¹⁰ = 251102977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251104031) 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, 650336 + ... + 650721.

It is an arithmetic number, because the mean of its divisors is an integer number (63101313).

Almost surely, 2^251104001 is an apocalyptic number.

It is an amenable number.

251104001 is a deficient number, since it is larger than the sum of its proper divisors (1301251).

251104001 is a wasteful number, since it uses less digits than its factorization.

251104001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301250.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 251104001 is about 15846.2614202846. The cubic root of 251104001 is about 630.8864660282.

Adding to 251104001 its reverse (100401152), we get a palindrome (351505153).

The spelling of 251104001 in words is "two hundred fifty-one million, one hundred four thousand, one".