701251409 has 2 divisors, whose sum is σ = 701251410. Its totient is φ = 701251408.

The previous prime is 701251387. The next prime is 701251429. The reversal of 701251409 is 904152107.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701190400 + 61009 = 26480^2 + 247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-701251409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (701251429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350625704 + 350625705.

It is an arithmetic number, because the mean of its divisors is an integer number (350625705).

Almost surely, 2^701251409 is an apocalyptic number.

It is an amenable number.

701251409 is a deficient number, since it is larger than the sum of its proper divisors (1).

701251409 is an equidigital number, since it uses as much as digits as its factorization.

701251409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 701251409 is about 26481.1519575716. The cubic root of 701251409 is about 888.4327967820.

The spelling of 701251409 in words is "seven hundred one million, two hundred fifty-one thousand, four hundred nine".