455387381 has 8 divisors (see below), whose sum is σ = 484965144. Its totient is φ = 426119680.

The previous prime is 455387353. The next prime is 455387417. The reversal of 455387381 is 183783554.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 125238481 + 330148900 = 11191^2 + 18170^2 .

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 455387381 - 2²² = 451193077 is a prime.

It is a super-2 number, since 2×455387381² = 414755333548078322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455387321) 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, 74480 + ... + 80361.

It is an arithmetic number, because the mean of its divisors is an integer number (60620643).

Almost surely, 2^455387381 is an apocalyptic number.

It is an amenable number.

455387381 is a deficient number, since it is larger than the sum of its proper divisors (29577763).

455387381 is a wasteful number, since it uses less digits than its factorization.

455387381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155031.

The product of its digits is 403200, while the sum is 44.

The square root of 455387381 is about 21339.8074264976. The cubic root of 455387381 is about 769.3553839286.

The spelling of 455387381 in words is "four hundred fifty-five million, three hundred eighty-seven thousand, three hundred eighty-one".