1026551655 has 12 divisors (see below), whose sum is σ = 1779356280. Its totient is φ = 547494192.

The previous prime is 1026551593. The next prime is 1026551671. The reversal of 1026551655 is 5561556201.

It is not a de Polignac number, because 1026551655 - 2¹⁰ = 1026550631 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11406085 + ... + 11406174.

It is an arithmetic number, because the mean of its divisors is an integer number (148279690).

Almost surely, 2^1026551655 is an apocalyptic number.

1026551655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1026551655 is a deficient number, since it is larger than the sum of its proper divisors (752804625).

1026551655 is a wasteful number, since it uses less digits than its factorization.

1026551655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22812270 (or 22812267 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The square root of 1026551655 is about 32039.8448029949. The cubic root of 1026551655 is about 1008.7733548118.

The spelling of 1026551655 in words is "one billion, twenty-six million, five hundred fifty-one thousand, six hundred fifty-five".