145552619 has 2 divisors, whose sum is σ = 145552620. Its totient is φ = 145552618.

The previous prime is 145552613. The next prime is 145552637. The reversal of 145552619 is 916255541.

It is a weak prime.

It is an emirp because it is prime and its reverse (916255541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145552619 - 2²⁴ = 128775403 is a prime.

It is a super-2 number, since 2×145552619² = 42371129795518322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145552613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72776309 + 72776310.

It is an arithmetic number, because the mean of its divisors is an integer number (72776310).

Almost surely, 2^145552619 is an apocalyptic number.

145552619 is a deficient number, since it is larger than the sum of its proper divisors (1).

145552619 is an equidigital number, since it uses as much as digits as its factorization.

145552619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54000, while the sum is 38.

The square root of 145552619 is about 12064.5190123767. The cubic root of 145552619 is about 526.0253509350.

The spelling of 145552619 in words is "one hundred forty-five million, five hundred fifty-two thousand, six hundred nineteen".