1051538 has 4 divisors (see below), whose sum is σ = 1577310. Its totient is φ = 525768.

The previous prime is 1051507. The next prime is 1051543. The reversal of 1051538 is 8351501.

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

It can be written as a sum of positive squares in only one way, i.e., 543169 + 508369 = 737^2 + 713^2 .

It is a super-2 number, since 2×1051538² = 2211464330888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262883 + ... + 262886.

2^1051538 is an apocalyptic number.

1051538 is a deficient number, since it is larger than the sum of its proper divisors (525772).

1051538 is an equidigital number, since it uses as much as digits as its factorization.

1051538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525771.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1051538 is about 1025.4452691392. The cubic root of 1051538 is about 101.6892374266.

The spelling of 1051538 in words is "one million, fifty-one thousand, five hundred thirty-eight".