20150087 has 2 divisors, whose sum is σ = 20150088. Its totient is φ = 20150086.

The previous prime is 20150077. The next prime is 20150111. The reversal of 20150087 is 78005102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20150087 - 2⁴ = 20150071 is a prime.

It is a super-2 number, since 2×20150087² = 812052012215138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20150077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075043 + 10075044.

It is an arithmetic number, because the mean of its divisors is an integer number (10075044).

Almost surely, 2^20150087 is an apocalyptic number.

20150087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20150087 is an equidigital number, since it uses as much as digits as its factorization.

20150087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 20150087 is about 4488.8848281060. The cubic root of 20150087 is about 272.1190682205.

Adding to 20150087 its reverse (78005102), we get a palindrome (98155189).

The spelling of 20150087 in words is "twenty million, one hundred fifty thousand, eighty-seven".