1147078555 has 16 divisors (see below), whose sum is σ = 1588414464. Its totient is φ = 778929120.

The previous prime is 1147078549. The next prime is 1147078561. The reversal of 1147078555 is 5558707411.

It is an interprime number because it is at equal distance from previous prime (1147078549) and next prime (1147078561).

It is not a de Polignac number, because 1147078555 - 2¹⁹ = 1146554267 is a prime.

It is a super-2 number, since 2×1147078555² = 2631578422681776050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155491 + ... + 162700.

It is an arithmetic number, because the mean of its divisors is an integer number (99275904).

Almost surely, 2^1147078555 is an apocalyptic number.

1147078555 is a deficient number, since it is larger than the sum of its proper divisors (441335909).

1147078555 is a wasteful number, since it uses less digits than its factorization.

1147078555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318306.

The product of its (nonzero) digits is 196000, while the sum is 43.

The square root of 1147078555 is about 33868.5481678799. The cubic root of 1147078555 is about 1046.8016218918.

The spelling of 1147078555 in words is "one billion, one hundred forty-seven million, seventy-eight thousand, five hundred fifty-five".