1053891281 has 4 divisors (see below), whose sum is σ = 1054808064. Its totient is φ = 1052974500.

The previous prime is 1053891277. The next prime is 1053891287. The reversal of 1053891281 is 1821983501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1053891281 - 2² = 1053891277 is a prime.

It is a super-2 number, since 2×1053891281² = 2221373664335641922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1053891287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456665 + ... + 458966.

It is an arithmetic number, because the mean of its divisors is an integer number (263702016).

Almost surely, 2^1053891281 is an apocalyptic number.

It is an amenable number.

1053891281 is a deficient number, since it is larger than the sum of its proper divisors (916783).

1053891281 is an equidigital number, since it uses as much as digits as its factorization.

1053891281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 916782.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 1053891281 is about 32463.6917339972. The cubic root of 1053891281 is about 1017.6503911143.

The spelling of 1053891281 in words is "one billion, fifty-three million, eight hundred ninety-one thousand, two hundred eighty-one".