2215454554 has 4 divisors (see below), whose sum is σ = 3323181834. Its totient is φ = 1107727276.

The previous prime is 2215454519. The next prime is 2215454597. The reversal of 2215454554 is 4554545122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2009101329 + 206353225 = 44823^2 + 14365^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553863637 + ... + 553863640.

Almost surely, 2^2215454554 is an apocalyptic number.

2215454554 is a deficient number, since it is larger than the sum of its proper divisors (1107727280).

2215454554 is a wasteful number, since it uses less digits than its factorization.

2215454554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107727279.

The product of its digits is 160000, while the sum is 37.

The square root of 2215454554 is about 47068.6153822268. The cubic root of 2215454554 is about 1303.6298070471.

Adding to 2215454554 its reverse (4554545122), we get a palindrome (6769999676).

The spelling of 2215454554 in words is "two billion, two hundred fifteen million, four hundred fifty-four thousand, five hundred fifty-four".