1547222855 has 4 divisors (see below), whose sum is σ = 1856667432. Its totient is φ = 1237778280.

The previous prime is 1547222827. The next prime is 1547222881. The reversal of 1547222855 is 5582227451.

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

It is not a de Polignac number, because 1547222855 - 2²⁴ = 1530445639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154722281 + ... + 154722290.

It is an arithmetic number, because the mean of its divisors is an integer number (464166858).

Almost surely, 2^1547222855 is an apocalyptic number.

1547222855 is a deficient number, since it is larger than the sum of its proper divisors (309444577).

1547222855 is an equidigital number, since it uses as much as digits as its factorization.

1547222855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309444576.

The product of its digits is 224000, while the sum is 41.

The square root of 1547222855 is about 39334.7537808488. The cubic root of 1547222855 is about 1156.6029366989.

The spelling of 1547222855 in words is "one billion, five hundred forty-seven million, two hundred twenty-two thousand, eight hundred fifty-five".