1652454421 has 2 divisors, whose sum is σ = 1652454422. Its totient is φ = 1652454420.

The previous prime is 1652454361. The next prime is 1652454449. The reversal of 1652454421 is 1244542561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1377226321 + 275228100 = 37111^2 + 16590^2 .

It is an emirp because it is prime and its reverse (1244542561) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1652454421 is a prime.

It is a super-2 number, since 2×1652454421² = 5461211226964890482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1652452421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826227210 + 826227211.

It is an arithmetic number, because the mean of its divisors is an integer number (826227211).

Almost surely, 2^1652454421 is an apocalyptic number.

It is an amenable number.

1652454421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652454421 is an equidigital number, since it uses as much as digits as its factorization.

1652454421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 34.

The square root of 1652454421 is about 40650.3926303302. The cubic root of 1652454421 is about 1182.2513804322.

Adding to 1652454421 its reverse (1244542561), we get a palindrome (2896996982).

The spelling of 1652454421 in words is "one billion, six hundred fifty-two million, four hundred fifty-four thousand, four hundred twenty-one".