281091052 has 12 divisors (see below), whose sum is σ = 536628456. Its totient is φ = 127768640.

The previous prime is 281091049. The next prime is 281091079. The reversal of 281091052 is 250190182.

It is a self number, because there is not a number n which added to its sum of digits gives 281091052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3194173 + ... + 3194260.

It is an arithmetic number, because the mean of its divisors is an integer number (44719038).

Almost surely, 2^281091052 is an apocalyptic number.

281091052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

281091052 is a deficient number, since it is larger than the sum of its proper divisors (255537404).

281091052 is a wasteful number, since it uses less digits than its factorization.

281091052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388448 (or 6388446 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 281091052 is about 16765.7702477399. The cubic root of 281091052 is about 655.0618996335.

It can be divided in two parts, 28109 and 1052, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 281091052 in words is "two hundred eighty-one million, ninety-one thousand, fifty-two".