2991455 has 8 divisors (see below), whose sum is σ = 3778800. Its totient is φ = 2267136.

The previous prime is 2991451. The next prime is 2991463. The reversal of 2991455 is 5541992.

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 2991455 - 2² = 2991451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991451) 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, 15650 + ... + 15839.

It is an arithmetic number, because the mean of its divisors is an integer number (472350).

2^2991455 is an apocalyptic number.

2991455 is a deficient number, since it is larger than the sum of its proper divisors (787345).

2991455 is a wasteful number, since it uses less digits than its factorization.

2991455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31513.

The product of its digits is 16200, while the sum is 35.

The square root of 2991455 is about 1729.5823195211. The cubic root of 2991455 is about 144.0878932296.

The spelling of 2991455 in words is "two million, nine hundred ninety-one thousand, four hundred fifty-five".