2158500455 has 32 divisors (see below), whose sum is σ = 2825653248. Its totient is φ = 1576512000.

The previous prime is 2158500451. The next prime is 2158500499. The reversal of 2158500455 is 5540058512.

It is not a de Polignac number, because 2158500455 - 2² = 2158500451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158500451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549950 + ... + 553860.

It is an arithmetic number, because the mean of its divisors is an integer number (88301664).

Almost surely, 2^2158500455 is an apocalyptic number.

2158500455 is a deficient number, since it is larger than the sum of its proper divisors (667152793).

2158500455 is a wasteful number, since it uses less digits than its factorization.

2158500455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127.

The product of its (nonzero) digits is 40000, while the sum is 35.

The square root of 2158500455 is about 46459.6648179902. The cubic root of 2158500455 is about 1292.3616084942.

Adding to 2158500455 its reverse (5540058512), we get a palindrome (7698558967).

The spelling of 2158500455 in words is "two billion, one hundred fifty-eight million, five hundred thousand, four hundred fifty-five".