145605995 has 4 divisors (see below), whose sum is σ = 174727200. Its totient is φ = 116484792.

The previous prime is 145605991. The next prime is 145605997. The reversal of 145605995 is 599506541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599506541 = 157 ⋅3818513.

It is a cyclic number.

It is not a de Polignac number, because 145605995 - 2² = 145605991 is a prime.

It is a super-2 number, since 2×145605995² = 42402211559880050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145605991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14560595 + ... + 14560604.

It is an arithmetic number, because the mean of its divisors is an integer number (43681800).

Almost surely, 2^145605995 is an apocalyptic number.

145605995 is a deficient number, since it is larger than the sum of its proper divisors (29121205).

145605995 is an equidigital number, since it uses as much as digits as its factorization.

145605995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29121204.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 145605995 is about 12066.7309160352. The cubic root of 145605995 is about 526.0896431429.

The spelling of 145605995 in words is "one hundred forty-five million, six hundred five thousand, nine hundred ninety-five".