145122811 has 8 divisors (see below), whose sum is σ = 150886400. Its totient is φ = 139426920.

The previous prime is 145122799. The next prime is 145122823. The reversal of 145122811 is 118221541.

It is an interprime number because it is at equal distance from previous prime (145122799) and next prime (145122823).

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

It is a cyclic number.

It is not a de Polignac number, because 145122811 - 2¹⁷ = 144991739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145122841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12531 + ... + 21148.

It is an arithmetic number, because the mean of its divisors is an integer number (18860800).

Almost surely, 2^145122811 is an apocalyptic number.

145122811 is a deficient number, since it is larger than the sum of its proper divisors (5763589).

145122811 is a wasteful number, since it uses less digits than its factorization.

145122811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33849.

The product of its digits is 640, while the sum is 25.

The square root of 145122811 is about 12046.6929486893. The cubic root of 145122811 is about 525.5070668610.

The spelling of 145122811 in words is "one hundred forty-five million, one hundred twenty-two thousand, eight hundred eleven".