2154020353 has 2 divisors, whose sum is σ = 2154020354. Its totient is φ = 2154020352.

The previous prime is 2154020333. The next prime is 2154020359. The reversal of 2154020353 is 3530204512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2088215809 + 65804544 = 45697^2 + 8112^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154020353 is a prime.

It is a super-2 number, since 2×2154020353² = 9279607362276489218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2154020359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077010176 + 1077010177.

It is an arithmetic number, because the mean of its divisors is an integer number (1077010177).

Almost surely, 2^2154020353 is an apocalyptic number.

It is an amenable number.

2154020353 is a deficient number, since it is larger than the sum of its proper divisors (1).

2154020353 is an equidigital number, since it uses as much as digits as its factorization.

2154020353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2154020353 is about 46411.4248111389. The cubic root of 2154020353 is about 1291.4668635316.

Adding to 2154020353 its reverse (3530204512), we get a palindrome (5684224865).

The spelling of 2154020353 in words is "two billion, one hundred fifty-four million, twenty thousand, three hundred fifty-three".