1047772555 has 4 divisors (see below), whose sum is σ = 1257327072. Its totient is φ = 838218040.

The previous prime is 1047772511. The next prime is 1047772573. The reversal of 1047772555 is 5552777401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5552777401 = 28019 ⋅198179.

It is not a de Polignac number, because 1047772555 - 2²¹ = 1045675403 is a prime.

It is a super-2 number, since 2×1047772555² = 2195654654022456050, which contains 22 as substring.

It is a Duffinian 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, 104777251 + ... + 104777260.

It is an arithmetic number, because the mean of its divisors is an integer number (314331768).

Almost surely, 2^1047772555 is an apocalyptic number.

1047772555 is a deficient number, since it is larger than the sum of its proper divisors (209554517).

1047772555 is an equidigital number, since it uses as much as digits as its factorization.

1047772555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209554516.

The product of its (nonzero) digits is 343000, while the sum is 43.

The square root of 1047772555 is about 32369.3150221008. The cubic root of 1047772555 is about 1015.6771283130.

The spelling of 1047772555 in words is "one billion, forty-seven million, seven hundred seventy-two thousand, five hundred fifty-five".