1401563 has 4 divisors (see below), whose sum is σ = 1404480. Its totient is φ = 1398648.

The previous prime is 1401559. The next prime is 1401571. The reversal of 1401563 is 3651041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3651041 = 103 ⋅35447.

It is a cyclic number.

It is not a de Polignac number, because 1401563 - 2² = 1401559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1401263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 1761.

It is an arithmetic number, because the mean of its divisors is an integer number (351120).

2^1401563 is an apocalyptic number.

1401563 is a deficient number, since it is larger than the sum of its proper divisors (2917).

1401563 is an equidigital number, since it uses as much as digits as its factorization.

1401563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1401563 is about 1183.8762604259. The cubic root of 1401563 is about 111.9105099349.

The spelling of 1401563 in words is "one million, four hundred one thousand, five hundred sixty-three".