1051998 has 8 divisors (see below), whose sum is σ = 2104008. Its totient is φ = 350664.

The previous prime is 1051991. The next prime is 1052027. The reversal of 1051998 is 8991501.

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

1051998 is an admirable number.

It is a super-2 number, since 2×1051998² = 2213399584008, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051991) 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, 87661 + ... + 87672.

It is an arithmetic number, because the mean of its divisors is an integer number (263001).

2^1051998 is an apocalyptic number.

1051998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1051998 is a wasteful number, since it uses less digits than its factorization.

1051998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175338.

The product of its (nonzero) digits is 3240, while the sum is 33.

The square root of 1051998 is about 1025.6695374242. The cubic root of 1051998 is about 101.7040634021.

The spelling of 1051998 in words is "one million, fifty-one thousand, nine hundred ninety-eight".