1401523 has 4 divisors (see below), whose sum is σ = 1439440. Its totient is φ = 1363608.

The previous prime is 1401511. The next prime is 1401529. The reversal of 1401523 is 3251041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3251041 = 67 ⋅48523.

It is a cyclic number.

It is not a de Polignac number, because 1401523 - 2¹³ = 1393331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401497 and 1401506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18903 + ... + 18976.

It is an arithmetic number, because the mean of its divisors is an integer number (359860).

2^1401523 is an apocalyptic number.

1401523 is a deficient number, since it is larger than the sum of its proper divisors (37917).

1401523 is an equidigital number, since it uses as much as digits as its factorization.

1401523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37916.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1401523 is about 1183.8593666479. The cubic root of 1401523 is about 111.9094452990.

Adding to 1401523 its reverse (3251041), we get a palindrome (4652564).

The spelling of 1401523 in words is "one million, four hundred one thousand, five hundred twenty-three".