145211965 has 16 divisors (see below), whose sum is σ = 185947200. Its totient is φ = 108542592.

The previous prime is 145211951. The next prime is 145211971. The reversal of 145211965 is 569112541.

It is a happy number.

145211965 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145211965 - 2⁵ = 145211933 is a prime.

It is a super-2 number, since 2×145211965² = 42173029558322450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145211965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3535 + ... + 17404.

It is an arithmetic number, because the mean of its divisors is an integer number (11621700).

Almost surely, 2^145211965 is an apocalyptic number.

It is an amenable number.

145211965 is a deficient number, since it is larger than the sum of its proper divisors (40735235).

145211965 is a wasteful number, since it uses less digits than its factorization.

145211965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21036.

The product of its digits is 10800, while the sum is 34.

The square root of 145211965 is about 12050.3927321893. The cubic root of 145211965 is about 525.6146572664.

The spelling of 145211965 in words is "one hundred forty-five million, two hundred eleven thousand, nine hundred sixty-five".