145322011 has 4 divisors (see below), whose sum is σ = 145557400. Its totient is φ = 145086624.

The previous prime is 145321997. The next prime is 145322029. The reversal of 145322011 is 110223541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110223541 = 19 ⋅5801239.

It is a cyclic number.

It is not a de Polignac number, because 145322011 - 2¹⁷ = 145190939 is a prime.

It is a super-2 number, since 2×145322011² = 42236973762168242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145322011.

It is not an unprimeable number, because it can be changed into a prime (145322311) 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, 116766 + ... + 118003.

It is an arithmetic number, because the mean of its divisors is an integer number (36389350).

Almost surely, 2^145322011 is an apocalyptic number.

145322011 is a deficient number, since it is larger than the sum of its proper divisors (235389).

145322011 is an equidigital number, since it uses as much as digits as its factorization.

145322011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235388.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 145322011 is about 12054.9579426890. The cubic root of 145322011 is about 525.7473992787.

Adding to 145322011 its reverse (110223541), we get a palindrome (255545552).

The spelling of 145322011 in words is "one hundred forty-five million, three hundred twenty-two thousand, eleven".