1051987 has 2 divisors, whose sum is σ = 1051988. Its totient is φ = 1051986.

The previous prime is 1051979. The next prime is 1051991. The reversal of 1051987 is 7891501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1051987 - 2³ = 1051979 is a prime.

It is a super-2 number, since 2×1051987² = 2213353296338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1051927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525993 + 525994.

It is an arithmetic number, because the mean of its divisors is an integer number (525994).

2^1051987 is an apocalyptic number.

1051987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051987 is an equidigital number, since it uses as much as digits as its factorization.

1051987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1051987 is about 1025.6641750593. The cubic root of 1051987 is about 101.7037089183.

The spelling of 1051987 in words is "one million, fifty-one thousand, nine hundred eighty-seven".