1054549999 has 4 divisors (see below), whose sum is σ = 1054682064. Its totient is φ = 1054417936.

The previous prime is 1054549981. The next prime is 1054550009. The reversal of 1054549999 is 9999454501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1054549999 - 2⁷ = 1054549871 is a prime.

It is a super-2 number, since 2×1054549999² = 2224151400781800002, 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 (1054589999) 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, 53227 + ... + 70300.

It is an arithmetic number, because the mean of its divisors is an integer number (263670516).

Almost surely, 2^1054549999 is an apocalyptic number.

1054549999 is a deficient number, since it is larger than the sum of its proper divisors (132065).

1054549999 is an equidigital number, since it uses as much as digits as its factorization.

1054549999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132064.

The product of its (nonzero) digits is 2624400, while the sum is 55.

The square root of 1054549999 is about 32473.8356065310. The cubic root of 1054549999 is about 1017.8623690252.

It can be divided in two parts, 10545499 and 99, that multiplied together give a palindrome (1044004401).

The spelling of 1054549999 in words is "one billion, fifty-four million, five hundred forty-nine thousand, nine hundred ninety-nine".