1534021 has 2 divisors, whose sum is σ = 1534022. Its totient is φ = 1534020.

The previous prime is 1534019. The next prime is 1534051. The reversal of 1534021 is 1204351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1185921 + 348100 = 1089^2 + 590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1534021 - 2¹ = 1534019 is a prime.

Together with 1534019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1533986 and 1534004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 767010 + 767011.

It is an arithmetic number, because the mean of its divisors is an integer number (767011).

2^1534021 is an apocalyptic number.

It is an amenable number.

1534021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534021 is an equidigital number, since it uses as much as digits as its factorization.

1534021 is an evil number, because the sum of its binary digits is even.

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

The square root of 1534021 is about 1238.5560140745. The cubic root of 1534021 is about 115.3303920382.

Adding to 1534021 its reverse (1204351), we get a palindrome (2738372).

The spelling of 1534021 in words is "one million, five hundred thirty-four thousand, twenty-one".