4221555154 has 4 divisors (see below), whose sum is σ = 6332332734. Its totient is φ = 2110777576.

The previous prime is 4221555113. The next prime is 4221555167. The reversal of 4221555154 is 4515551224.

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., 3358782025 + 862773129 = 57955^2 + 29373^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055388787 + ... + 1055388790.

Almost surely, 2^4221555154 is an apocalyptic number.

4221555154 is a deficient number, since it is larger than the sum of its proper divisors (2110777580).

4221555154 is a wasteful number, since it uses less digits than its factorization.

4221555154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110777579.

The product of its digits is 40000, while the sum is 34.

The square root of 4221555154 is about 64973.4957809721. The cubic root of 4221555154 is about 1616.1840727587.

The spelling of 4221555154 in words is "four billion, two hundred twenty-one million, five hundred fifty-five thousand, one hundred fifty-four".