1401761 has 2 divisors, whose sum is σ = 1401762.
Its totient is φ = 1401760.
The previous prime is 1401739. The next prime is 1401767. The reversal of 1401761 is 1671041.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 1308736 + 93025 = 1144^2 + 305^2
It is an emirp because it is prime and its reverse (1671041) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-1401761 is a prime.
It is a super-2 number, since 2×14017612 = 3929867802242, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (1401767) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700880 + 700881.
It is an arithmetic number, because the mean of its divisors is an integer number (700881).
21401761 is an apocalyptic number.
It is an amenable number.
1401761 is a deficient number, since it is larger than the sum of its proper divisors (1).
1401761 is an equidigital number, since it uses as much as digits as its factorization.
1401761 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 168, while the sum is 20.
The square root of 1401761 is about 1183.9598810771.
The cubic root of 1401761 is about 111.9157795845.
The spelling of 1401761 in words is "one million, four hundred one thousand, seven hundred sixty-one".