1051281 has 48 divisors (see below), whose sum is σ = 1991808. Its totient is φ = 518400.

The previous prime is 1051277. The next prime is 1051283. The reversal of 1051281 is 1821501.

It is not a de Polignac number, because 1051281 - 2² = 1051277 is a prime.

It is a super-2 number, since 2×1051281² = 2210383481922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051283) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25621 + ... + 25661.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2^1051281 is an apocalyptic number.

1051281 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1051281 is a deficient number, since it is larger than the sum of its proper divisors (940527).

1051281 is a wasteful number, since it uses less digits than its factorization.

1051281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1051281 is about 1025.3199500644. The cubic root of 1051281 is about 101.6809523358.

Adding to 1051281 its reverse (1821501), we get a palindrome (2872782).

The spelling of 1051281 in words is "one million, fifty-one thousand, two hundred eighty-one".