1401481 has 2 divisors, whose sum is σ = 1401482. Its totient is φ = 1401480.

The previous prime is 1401461. The next prime is 1401487. The reversal of 1401481 is 1841041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1245456 + 156025 = 1116^2 + 395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401481 is a prime.

It is a super-2 number, since 2×1401481² = 3928297986722, which contains 22 as substring.

1401481 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1401487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700740 + 700741.

It is an arithmetic number, because the mean of its divisors is an integer number (700741).

2^1401481 is an apocalyptic number.

It is an amenable number.

1401481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401481 is an equidigital number, since it uses as much as digits as its factorization.

1401481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 1401481 is about 1183.8416279216. The cubic root of 1401481 is about 111.9083274094.

The spelling of 1401481 in words is "one million, four hundred one thousand, four hundred eighty-one".