145057819 has 2 divisors, whose sum is σ = 145057820. Its totient is φ = 145057818.

The previous prime is 145057793. The next prime is 145057823. The reversal of 145057819 is 918750541.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (918750541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145057819 - 2¹⁹ = 144533531 is a prime.

It is a super-2 number, since 2×145057819² = 42083541706073522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145057879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72528909 + 72528910.

It is an arithmetic number, because the mean of its divisors is an integer number (72528910).

Almost surely, 2^145057819 is an apocalyptic number.

145057819 is a deficient number, since it is larger than the sum of its proper divisors (1).

145057819 is an equidigital number, since it uses as much as digits as its factorization.

145057819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 145057819 is about 12043.9951428087. The cubic root of 145057819 is about 525.4286072106.

The spelling of 145057819 in words is "one hundred forty-five million, fifty-seven thousand, eight hundred nineteen".