1054021569 has 4 divisors (see below), whose sum is σ = 1405362096. Its totient is φ = 702681044.

The previous prime is 1054021537. The next prime is 1054021603. The reversal of 1054021569 is 9651204501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1054021569 - 2⁵ = 1054021537 is a prime.

It is a super-2 number, since 2×1054021569² = 2221922935834443522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1054021519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175670259 + ... + 175670264.

It is an arithmetic number, because the mean of its divisors is an integer number (351340524).

Almost surely, 2^1054021569 is an apocalyptic number.

It is an amenable number.

1054021569 is a deficient number, since it is larger than the sum of its proper divisors (351340527).

1054021569 is an equidigital number, since it uses as much as digits as its factorization.

1054021569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351340526.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 1054021569 is about 32465.6983445605. The cubic root of 1054021569 is about 1017.6923252850.

The spelling of 1054021569 in words is "one billion, fifty-four million, twenty-one thousand, five hundred sixty-nine".