145220087 has 2 divisors, whose sum is σ = 145220088. Its totient is φ = 145220086.

The previous prime is 145220057. The next prime is 145220107. The reversal of 145220087 is 780022541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145220087 - 2¹⁴ = 145203703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145220057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72610043 + 72610044.

It is an arithmetic number, because the mean of its divisors is an integer number (72610044).

Almost surely, 2^145220087 is an apocalyptic number.

145220087 is a deficient number, since it is larger than the sum of its proper divisors (1).

145220087 is an equidigital number, since it uses as much as digits as its factorization.

145220087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 145220087 is about 12050.7297289417. The cubic root of 145220087 is about 525.6244566487.

The spelling of 145220087 in words is "one hundred forty-five million, two hundred twenty thousand, eighty-seven".