145330777 has 2 divisors, whose sum is σ = 145330778. Its totient is φ = 145330776.

The previous prime is 145330771. The next prime is 145330781. The reversal of 145330777 is 777033541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81793936 + 63536841 = 9044^2 + 7971^2 .

It is a cyclic number.

It is not a de Polignac number, because 145330777 - 2⁷ = 145330649 is a prime.

It is a super-2 number, since 2×145330777² = 42242069486847458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145330771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72665388 + 72665389.

It is an arithmetic number, because the mean of its divisors is an integer number (72665389).

Almost surely, 2^145330777 is an apocalyptic number.

It is an amenable number.

145330777 is a deficient number, since it is larger than the sum of its proper divisors (1).

145330777 is an equidigital number, since it uses as much as digits as its factorization.

145330777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61740, while the sum is 37.

The square root of 145330777 is about 12055.3215220499. The cubic root of 145330777 is about 525.7579703064.

The spelling of 145330777 in words is "one hundred forty-five million, three hundred thirty thousand, seven hundred seventy-seven".