1020653255 has 16 divisors (see below), whose sum is σ = 1231749504. Its totient is φ = 811895040.

The previous prime is 1020653239. The next prime is 1020653273. The reversal of 1020653255 is 5523560201.

It is a happy number.

It is not a de Polignac number, because 1020653255 - 2⁴ = 1020653239 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 854939 + ... + 856131.

It is an arithmetic number, because the mean of its divisors is an integer number (76984344).

Almost surely, 2^1020653255 is an apocalyptic number.

1020653255 is a deficient number, since it is larger than the sum of its proper divisors (211096249).

1020653255 is a wasteful number, since it uses less digits than its factorization.

1020653255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2026.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1020653255 is about 31947.6643121215. The cubic root of 1020653255 is about 1006.8375595556.

The spelling of 1020653255 in words is "one billion, twenty million, six hundred fifty-three thousand, two hundred fifty-five".