145392977 has 2 divisors, whose sum is σ = 145392978. Its totient is φ = 145392976.

The previous prime is 145392971. The next prime is 145392983. The reversal of 145392977 is 779293541.

It is a balanced prime because it is at equal distance from previous prime (145392971) and next prime (145392983).

It can be written as a sum of positive squares in only one way, i.e., 112169281 + 33223696 = 10591^2 + 5764^2 .

It is a cyclic number.

It is not a de Polignac number, because 145392977 - 2¹⁸ = 145130833 is a prime.

It is a super-2 number, since 2×145392977² = 42278235521845058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145392971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72696488 + 72696489.

It is an arithmetic number, because the mean of its divisors is an integer number (72696489).

Almost surely, 2^145392977 is an apocalyptic number.

It is an amenable number.

145392977 is a deficient number, since it is larger than the sum of its proper divisors (1).

145392977 is an equidigital number, since it uses as much as digits as its factorization.

145392977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 47.

The square root of 145392977 is about 12057.9010196634. The cubic root of 145392977 is about 525.8329658491.

The spelling of 145392977 in words is "one hundred forty-five million, three hundred ninety-two thousand, nine hundred seventy-seven".