1020550511 has 8 divisors (see below), whose sum is σ = 1082905200. Its totient is φ = 958453888.

The previous prime is 1020550507. The next prime is 1020550523. The reversal of 1020550511 is 1150550201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020550511 - 2² = 1020550507 is a prime.

It is a super-2 number, since 2×1020550511² = 2083046691004722242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020559511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56336 + ... + 72213.

It is an arithmetic number, because the mean of its divisors is an integer number (135363150).

Almost surely, 2^1020550511 is an apocalyptic number.

1020550511 is a deficient number, since it is larger than the sum of its proper divisors (62354689).

1020550511 is a wasteful number, since it uses less digits than its factorization.

1020550511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129033.

The product of its (nonzero) digits is 250, while the sum is 20.

The square root of 1020550511 is about 31946.0562667757. The cubic root of 1020550511 is about 1006.8037740073.

The spelling of 1020550511 in words is "one billion, twenty million, five hundred fifty thousand, five hundred eleven".