1051887 has 4 divisors (see below), whose sum is σ = 1402520. Its totient is φ = 701256.

The previous prime is 1051879. The next prime is 1051889. The reversal of 1051887 is 7881501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7881501 = 3 ⋅2627167.

It is not a de Polignac number, because 1051887 - 2³ = 1051879 is a prime.

It is a super-2 number, since 2×1051887² = 2212932521538, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051889) 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, 175312 + ... + 175317.

It is an arithmetic number, because the mean of its divisors is an integer number (350630).

2^1051887 is an apocalyptic number.

1051887 is a deficient number, since it is larger than the sum of its proper divisors (350633).

1051887 is an equidigital number, since it uses as much as digits as its factorization.

1051887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350632.

The product of its (nonzero) digits is 2240, while the sum is 30.

The square root of 1051887 is about 1025.6154250010. The cubic root of 1051887 is about 101.7004862254.

It can be divided in two parts, 105 and 1887, that multiplied together give a triangular number (198135 = T₆₂₉).

The spelling of 1051887 in words is "one million, fifty-one thousand, eight hundred eighty-seven".