5601391 has 2 divisors, whose sum is σ = 5601392. Its totient is φ = 5601390.

The previous prime is 5601389. The next prime is 5601433. The reversal of 5601391 is 1931065.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5601391 - 2¹ = 5601389 is a prime.

It is a super-2 number, since 2×5601391² = 62751162269762, which contains 22 as substring.

Together with 5601389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5601361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2800695 + 2800696.

It is an arithmetic number, because the mean of its divisors is an integer number (2800696).

Almost surely, 2^5601391 is an apocalyptic number.

5601391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5601391 is an equidigital number, since it uses as much as digits as its factorization.

5601391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 5601391 is about 2366.7257973834. The cubic root of 5601391 is about 177.5955023987.

The spelling of 5601391 in words is "five million, six hundred one thousand, three hundred ninety-one".