2011455401 has 4 divisors (see below), whose sum is σ = 2011550592. Its totient is φ = 2011360212.

The previous prime is 2011455377. The next prime is 2011455403. The reversal of 2011455401 is 1045541102.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1045541102 = 2 ⋅522770551.

It is a cyclic number.

It is not a de Polignac number, because 2011455401 - 2¹⁰ = 2011454377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011455403) 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, 101 + ... + 63426.

It is an arithmetic number, because the mean of its divisors is an integer number (502887648).

Almost surely, 2^2011455401 is an apocalyptic number.

It is an amenable number.

2011455401 is a deficient number, since it is larger than the sum of its proper divisors (95191).

2011455401 is an equidigital number, since it uses as much as digits as its factorization.

2011455401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95190.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2011455401 is about 44849.2519558576. The cubic root of 2011455401 is about 1262.3219552995.

Adding to 2011455401 its reverse (1045541102), we get a palindrome (3056996503).

The spelling of 2011455401 in words is "two billion, eleven million, four hundred fifty-five thousand, four hundred one".