145401779 has 2 divisors, whose sum is σ = 145401780. Its totient is φ = 145401778.

The previous prime is 145401769. The next prime is 145401797. The reversal of 145401779 is 977104541.

Together with next prime (145401797) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145401779 - 2⁸ = 145401523 is a prime.

It is a super-2 number, since 2×145401779² = 42283354672729682, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145401709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72700889 + 72700890.

It is an arithmetic number, because the mean of its divisors is an integer number (72700890).

Almost surely, 2^145401779 is an apocalyptic number.

145401779 is a deficient number, since it is larger than the sum of its proper divisors (1).

145401779 is an equidigital number, since it uses as much as digits as its factorization.

145401779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 145401779 is about 12058.2660030371. The cubic root of 145401779 is about 525.8435768348.

The spelling of 145401779 in words is "one hundred forty-five million, four hundred one thousand, seven hundred seventy-nine".