1056361987 has 2 divisors, whose sum is σ = 1056361988. Its totient is φ = 1056361986.

The previous prime is 1056361973. The next prime is 1056361993. The reversal of 1056361987 is 7891636501.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056361987 is a prime.

It is a super-2 number, since 2×1056361987² = 2231801295157176338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1056361907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528180993 + 528180994.

It is an arithmetic number, because the mean of its divisors is an integer number (528180994).

Almost surely, 2^1056361987 is an apocalyptic number.

1056361987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056361987 is an equidigital number, since it uses as much as digits as its factorization.

1056361987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1056361987 is about 32501.7228312593. The cubic root of 1056361987 is about 1018.4450185120.

The spelling of 1056361987 in words is "one billion, fifty-six million, three hundred sixty-one thousand, nine hundred eighty-seven".