1051004491 has 2 divisors, whose sum is σ = 1051004492. Its totient is φ = 1051004490.

The previous prime is 1051004473. The next prime is 1051004503. The reversal of 1051004491 is 1944001501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1051004491 - 2²⁵ = 1017450059 is a prime.

It is a super-2 number, since 2×1051004491² = 2209220880204338162, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051004401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525502245 + 525502246.

It is an arithmetic number, because the mean of its divisors is an integer number (525502246).

Almost surely, 2^1051004491 is an apocalyptic number.

1051004491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051004491 is an equidigital number, since it uses as much as digits as its factorization.

1051004491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 1051004491 is about 32419.1994194798. The cubic root of 1051004491 is about 1016.7203681150.

Adding to 1051004491 its reverse (1944001501), we get a palindrome (2995005992).

The spelling of 1051004491 in words is "one billion, fifty-one million, four thousand, four hundred ninety-one".