1045155511 has 4 divisors (see below), whose sum is σ = 1051567672. Its totient is φ = 1038743352.

The previous prime is 1045155493. The next prime is 1045155541. The reversal of 1045155511 is 1155515401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1155515401 = 461 ⋅2506541.

It is a cyclic number.

It is not a de Polignac number, because 1045155511 - 2⁵ = 1045155479 is a prime.

It is a super-2 number, since 2×1045155511² = 2184700084347342242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1045155511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1045155541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3205836 + ... + 3206161.

It is an arithmetic number, because the mean of its divisors is an integer number (262891918).

Almost surely, 2^1045155511 is an apocalyptic number.

1045155511 is a deficient number, since it is larger than the sum of its proper divisors (6412161).

1045155511 is an equidigital number, since it uses as much as digits as its factorization.

1045155511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6412160.

The product of its (nonzero) digits is 2500, while the sum is 28.

The square root of 1045155511 is about 32328.8649816228. The cubic root of 1045155511 is about 1014.8307971002.

The spelling of 1045155511 in words is "one billion, forty-five million, one hundred fifty-five thousand, five hundred eleven".