1053908621 has 2 divisors, whose sum is σ = 1053908622. Its totient is φ = 1053908620.

The previous prime is 1053908579. The next prime is 1053908623. The reversal of 1053908621 is 1268093501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 863772100 + 190136521 = 29390^2 + 13789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1053908621 is a prime.

It is a super-2 number, since 2×1053908621² = 2221446762836243282, which contains 22 as substring.

Together with 1053908623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1053908623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526954310 + 526954311.

It is an arithmetic number, because the mean of its divisors is an integer number (526954311).

Almost surely, 2^1053908621 is an apocalyptic number.

It is an amenable number.

1053908621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1053908621 is an equidigital number, since it uses as much as digits as its factorization.

1053908621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1053908621 is about 32463.9588004914. The cubic root of 1053908621 is about 1017.6559723228.

The spelling of 1053908621 in words is "one billion, fifty-three million, nine hundred eight thousand, six hundred twenty-one".