281256801 has 8 divisors (see below), whose sum is σ = 428581824. Its totient is φ = 160718160.

The previous prime is 281256799. The next prime is 281256803. The reversal of 281256801 is 108652182.

It is an interprime number because it is at equal distance from previous prime (281256799) and next prime (281256803).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 281256801 - 2¹ = 281256799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (281256803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6696570 + ... + 6696611.

It is an arithmetic number, because the mean of its divisors is an integer number (53572728).

Almost surely, 2^281256801 is an apocalyptic number.

281256801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

281256801 is a deficient number, since it is larger than the sum of its proper divisors (147325023).

281256801 is a wasteful number, since it uses less digits than its factorization.

281256801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13393191.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 281256801 is about 16770.7125966668. The cubic root of 281256801 is about 655.1906295948.

The spelling of 281256801 in words is "two hundred eighty-one million, two hundred fifty-six thousand, eight hundred one".