1078155551 has 16 divisors (see below), whose sum is σ = 1241049600. Its totient is φ = 926323200.

The previous prime is 1078155539. The next prime is 1078155563. The reversal of 1078155551 is 1555518701.

It is an interprime number because it is at equal distance from previous prime (1078155539) and next prime (1078155563).

It is not a de Polignac number, because 1078155551 - 2¹⁰ = 1078154527 is a prime.

It is a super-2 number, since 2×1078155551² = 2324838784304227202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078155511) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 84095 + ... + 96063.

It is an arithmetic number, because the mean of its divisors is an integer number (77565600).

Almost surely, 2^1078155551 is an apocalyptic number.

1078155551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1078155551 is a deficient number, since it is larger than the sum of its proper divisors (162894049).

1078155551 is a wasteful number, since it uses less digits than its factorization.

1078155551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12430.

The product of its (nonzero) digits is 35000, while the sum is 38.

The square root of 1078155551 is about 32835.2790607907. The cubic root of 1078155551 is about 1025.4011678947.

The spelling of 1078155551 in words is "one billion, seventy-eight million, one hundred fifty-five thousand, five hundred fifty-one".