455144991 has 16 divisors (see below), whose sum is σ = 702336000. Its totient is φ = 256789728.

The previous prime is 455144971. The next prime is 455144993. The reversal of 455144991 is 199441554.

It is a happy number.

It is not a de Polignac number, because 455144991 - 2¹⁰ = 455143967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455144993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135516 + ... + 138833.

It is an arithmetic number, because the mean of its divisors is an integer number (43896000).

Almost surely, 2^455144991 is an apocalyptic number.

455144991 is a deficient number, since it is larger than the sum of its proper divisors (247191009).

455144991 is a wasteful number, since it uses less digits than its factorization.

455144991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274438.

The product of its digits is 129600, while the sum is 42.

The square root of 455144991 is about 21334.1273784516. The cubic root of 455144991 is about 769.2188575661.

It can be divided in two parts, 45514 and 4991, that added together give a palindrome (50505).

The spelling of 455144991 in words is "four hundred fifty-five million, one hundred forty-four thousand, nine hundred ninety-one".