1400801251 has 2 divisors, whose sum is σ = 1400801252. Its totient is φ = 1400801250.

The previous prime is 1400801231. The next prime is 1400801267. The reversal of 1400801251 is 1521080041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1400801251 - 2¹¹ = 1400799203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1400801231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700400625 + 700400626.

It is an arithmetic number, because the mean of its divisors is an integer number (700400626).

Almost surely, 2^1400801251 is an apocalyptic number.

1400801251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1400801251 is an equidigital number, since it uses as much as digits as its factorization.

1400801251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 1400801251 is about 37427.2795030577. The cubic root of 1400801251 is about 1118.9023181975.

Adding to 1400801251 its reverse (1521080041), we get a palindrome (2921881292).

The spelling of 1400801251 in words is "one billion, four hundred million, eight hundred one thousand, two hundred fifty-one".