145975811 has 2 divisors, whose sum is σ = 145975812. Its totient is φ = 145975810.

The previous prime is 145975801. The next prime is 145975813. The reversal of 145975811 is 118579541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145975811 - 2¹⁴ = 145959427 is a prime.

It is a Sophie Germain prime.

Together with 145975813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145975813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72987905 + 72987906.

It is an arithmetic number, because the mean of its divisors is an integer number (72987906).

Almost surely, 2^145975811 is an apocalyptic number.

145975811 is a deficient number, since it is larger than the sum of its proper divisors (1).

145975811 is an equidigital number, since it uses as much as digits as its factorization.

145975811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50400, while the sum is 41.

The square root of 145975811 is about 12082.0449841904. The cubic root of 145975811 is about 526.5346611873.

The spelling of 145975811 in words is "one hundred forty-five million, nine hundred seventy-five thousand, eight hundred eleven".