7251401 has 4 divisors (see below), whose sum is σ = 7677972. Its totient is φ = 6824832.

The previous prime is 7251397. The next prime is 7251481. The reversal of 7251401 is 1041527.

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 6760000 + 491401 = 2600^2 + 701^2 .

It is a cyclic number.

It is not a de Polignac number, because 7251401 - 2² = 7251397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7251481) 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, 213260 + ... + 213293.

It is an arithmetic number, because the mean of its divisors is an integer number (1919493).

Almost surely, 2^7251401 is an apocalyptic number.

It is an amenable number.

7251401 is a deficient number, since it is larger than the sum of its proper divisors (426571).

7251401 is a wasteful number, since it uses less digits than its factorization.

7251401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426570.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 7251401 is about 2692.8425501689. The cubic root of 7251401 is about 193.5562981208.

Adding to 7251401 its reverse (1041527), we get a palindrome (8292928).

The spelling of 7251401 in words is "seven million, two hundred fifty-one thousand, four hundred one".