1078520055 has 16 divisors (see below), whose sum is σ = 1758192480. Its totient is φ = 564357248.

The previous prime is 1078520029. The next prime is 1078520057. The reversal of 1078520055 is 5500258701.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1078520055 - 2⁶ = 1078519991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1078519998 and 1078520025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078520057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677520 + ... + 679109.

It is an arithmetic number, because the mean of its divisors is an integer number (109887030).

Almost surely, 2^1078520055 is an apocalyptic number.

1078520055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1078520055 is a deficient number, since it is larger than the sum of its proper divisors (679672425).

1078520055 is a wasteful number, since it uses less digits than its factorization.

1078520055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356690.

The product of its (nonzero) digits is 14000, while the sum is 33.

The square root of 1078520055 is about 32840.8290851495. The cubic root of 1078520055 is about 1025.5167111217.

Adding to 1078520055 its reverse (5500258701), we get a palindrome (6578778756).

The spelling of 1078520055 in words is "one billion, seventy-eight million, five hundred twenty thousand, fifty-five".