2235981 has 8 divisors (see below), whose sum is σ = 3252384. Its totient is φ = 1355120.

The previous prime is 2235973. The next prime is 2235997. The reversal of 2235981 is 1895322.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2235981 - 2³ = 2235973 is a prime.

It is a super-2 number, since 2×2235981² = 9999222064722, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2235941) 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, 33846 + ... + 33911.

It is an arithmetic number, because the mean of its divisors is an integer number (406548).

2^2235981 is an apocalyptic number.

It is an amenable number.

2235981 is a deficient number, since it is larger than the sum of its proper divisors (1016403).

2235981 is a wasteful number, since it uses less digits than its factorization.

2235981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67771.

The product of its digits is 4320, while the sum is 30.

The square root of 2235981 is about 1495.3196982585. The cubic root of 2235981 is about 130.7643530875.

The spelling of 2235981 in words is "two million, two hundred thirty-five thousand, nine hundred eighty-one".