1020552511 has 8 divisors (see below), whose sum is σ = 1113589584. Its totient is φ = 927558720.

The previous prime is 1020552493. The next prime is 1020552521. The reversal of 1020552511 is 1152550201.

It is a happy number.

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

It is not a de Polignac number, because 1020552511 - 2⁷ = 1020552383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020552521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57001 + ... + 72733.

It is an arithmetic number, because the mean of its divisors is an integer number (139198698).

Almost surely, 2^1020552511 is an apocalyptic number.

1020552511 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1020552511 is a deficient number, since it is larger than the sum of its proper divisors (93037073).

1020552511 is a wasteful number, since it uses less digits than its factorization.

1020552511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21641.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 1020552511 is about 31946.0875695288. The cubic root of 1020552511 is about 1006.8044316936.

The spelling of 1020552511 in words is "one billion, twenty million, five hundred fifty-two thousand, five hundred eleven".