1055111511 has 48 divisors (see below), whose sum is σ = 1557045504. Its totient is φ = 633169152.

The previous prime is 1055111489. The next prime is 1055111527. The reversal of 1055111511 is 1151115501.

It is not a de Polignac number, because 1055111511 - 2¹⁴ = 1055095127 is a prime.

It is a super-2 number, since 2×1055111511² = 2226520601289406242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055111531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6317950 + ... + 6318116.

It is an arithmetic number, because the mean of its divisors is an integer number (32438448).

Almost surely, 2^1055111511 is an apocalyptic number.

1055111511 is a deficient number, since it is larger than the sum of its proper divisors (501933993).

1055111511 is a wasteful number, since it uses less digits than its factorization.

1055111511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 21.

The square root of 1055111511 is about 32482.4800623351. The cubic root of 1055111511 is about 1018.0429959981.

The spelling of 1055111511 in words is "one billion, fifty-five million, one hundred eleven thousand, five hundred eleven".