145291105 has 8 divisors (see below), whose sum is σ = 174617064. Its totient is φ = 116054400.

The previous prime is 145291067. The next prime is 145291117. The reversal of 145291105 is 501192541.

145291105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 54641664 + 90649441 = 7392^2 + 9521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145291105 - 2¹³ = 145282913 is a prime.

It is a super-2 number, since 2×145291105² = 42219010384242050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18676 + ... + 25285.

It is an arithmetic number, because the mean of its divisors is an integer number (21827133).

Almost surely, 2^145291105 is an apocalyptic number.

It is an amenable number.

145291105 is a deficient number, since it is larger than the sum of its proper divisors (29325959).

145291105 is an equidigital number, since it uses as much as digits as its factorization.

145291105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44627.

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 145291105 is about 12053.6759953136. The cubic root of 145291105 is about 525.7101259594.

The spelling of 145291105 in words is "one hundred forty-five million, two hundred ninety-one thousand, one hundred five".