2005154087 has 2 divisors, whose sum is σ = 2005154088. Its totient is φ = 2005154086.

The previous prime is 2005154083. The next prime is 2005154093. The reversal of 2005154087 is 7804515002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2005154087 - 2² = 2005154083 is a prime.

It is a super-2 number, since 2×2005154087² = 8041285825225607138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005154083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002577043 + 1002577044.

It is an arithmetic number, because the mean of its divisors is an integer number (1002577044).

Almost surely, 2^2005154087 is an apocalyptic number.

2005154087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005154087 is an equidigital number, since it uses as much as digits as its factorization.

2005154087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 2005154087 is about 44778.9469170502. The cubic root of 2005154087 is about 1261.0024119712.

Adding to 2005154087 its reverse (7804515002), we get a palindrome (9809669089).

The spelling of 2005154087 in words is "two billion, five million, one hundred fifty-four thousand, eighty-seven".