227881001 has 4 divisors (see below), whose sum is σ = 228039504. Its totient is φ = 227722500.

The previous prime is 227880997. The next prime is 227881007. The reversal of 227881001 is 100188722.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100188722 = 2 ⋅50094361.

It is a cyclic number.

It is not a de Polignac number, because 227881001 - 2² = 227880997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227881007) 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, 77075 + ... + 79976.

It is an arithmetic number, because the mean of its divisors is an integer number (57009876).

Almost surely, 2^227881001 is an apocalyptic number.

It is an amenable number.

227881001 is a deficient number, since it is larger than the sum of its proper divisors (158503).

227881001 is a wasteful number, since it uses less digits than its factorization.

227881001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158502.

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 227881001 is about 15095.7279056030. The cubic root of 227881001 is about 610.8051725198.

The spelling of 227881001 in words is "two hundred twenty-seven million, eight hundred eighty-one thousand, one".