145402211 has 4 divisors (see below), whose sum is σ = 145505112. Its totient is φ = 145299312.

The previous prime is 145402163. The next prime is 145402217. The reversal of 145402211 is 112204541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145402211 - 2¹⁴ = 145385827 is a prime.

It is a super-2 number, since 2×145402211² = 42283605927377042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145402217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49301 + ... + 52166.

It is an arithmetic number, because the mean of its divisors is an integer number (36376278).

Almost surely, 2^145402211 is an apocalyptic number.

145402211 is a deficient number, since it is larger than the sum of its proper divisors (102901).

145402211 is a wasteful number, since it uses less digits than its factorization.

145402211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102900.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 145402211 is about 12058.2839160471. The cubic root of 145402211 is about 525.8440976083.

Adding to 145402211 its reverse (112204541), we get a palindrome (257606752).

The spelling of 145402211 in words is "one hundred forty-five million, four hundred two thousand, two hundred eleven".